Apéndice 1. Gramíneas de México
Lista de especies de Poaceae de México. Para cada género se incluye entre paréntesis: total de especies / total de especies endémicas de México presentes en dos o más estados / total de especies endémicas de México presentes en un solo estado / total de especies introducidas / subfamilia). La simbología utilizada en las especies y categorías infra específicas es la siguiente: * (endémicas de México presentes en 2 o más estados), ** (endémicas de México presentes en un solo estado) y + (introducida). Las abreviaturas de las entidades federativas son las siguientes: Aguascalientes (AGS), Baja California (BC), Baja California Sur (BCS), Campeche (CAM), Ciudad de México (CDM), Chiapas (CHIS), Chihuahua (CHIH), Coahuila (COAH), Colima (COL), Durango (DGO), Estado de México (MÉX), Guanajuato (GTO), Guerrero (GRO), Hidalgo (HGO), Jalisco (JAL), Michoacán (MICH), Morelos (MOR), Nayarit (NAY), Nuevo León (NL), Oaxaca (OAX), Puebla (PUE), Querétaro (QRO), Quintana Roo (QROO), San Luis Potosí (SLP), Sinaloa (SIN), Sonora (SON), Tabasco (TAB), Tamaulipas (TAM), Tlaxcala (TLX), Veracruz (VER), Yucatán (YUC), Zacatecas (ZAC).
Aakia (1/0/0/0; Panicoideae)
Aakia tuerckheimii (Hack.) J.R. Grande (CHIS, PUE, VER).
Achnatherum (13/3/2/0; Pooideae)
**Achnatherum acutum (Swallen) Valdés-Reyna & Barkworth (COAH).
Achnatherum altum (Swallen) Hoge & Barkworth (COAH).
**Achnatherum bracteatum (Swallen) Valdés-Reyna & Barkworth (BC)
Achnatherum clandestinum (Hack.) Barkworth (AGS, COAH, MÉX, MICH, NL, PUE, SLP., ZAC).
*Achnatherum constrictum (Hitchc.) Valdés-Reyna & Barkworth (HGO, MÉX).
Achnatherum coronatum (Thurb.) Barkworth (BC)
Achnatherum curvifolium (Swallen) Barkworth (CHIH).
*Achnatherum editorum (E. Fourn.) Valdés-Reyna ex Barkworth (COAH, HGO, NL, PUE, SLP., TAM, VER, ZAC).
Achnatherum eminens (Cav.) Barkworth (AGS, BC, CHIH, CHIS, COAH, DGO, GTO, HGO, JAL, MÉX, NL, OAX, PUE, QRO, SLP., SON, TAM, VER, ZAC).
Achnatherum hymenoides (Roem. & Schult.) Barkworth (BC, CHIH)
*Achnatherum multinode (Scribn. ex Beal) Valdés-Reyna & Barkworth (CHIH, ZAC).
Achnatherum parishii (Vasey) Barkworth, Phytologia 74(1): 11. 1993.
Achnatherum parishii subsp. depauperatum (M.E. Jones) Barkworth (COAH).
Achnatherum parishii (Vasey) Barkworth subsp. parishii (COAH, NL).
Achnatherum robustum (Vasey) Barkworth (CHIH).
Acroceras (1/0/0/0; Panicoideae)
Acroceras zizanioides (Kunth) Dandy (CAM, CHIS, OAX, PUE, SLP., TAB, VER, YUC).
+Aegilops (1/0/0/1; Pooideae)
+Aegilops cylindrica Host (CHIH).
+Agropyron (1/0/0/1; Pooideae)
+Agropyron cristatum (L.) Gaertn. (CHIH).
Agrostis (21/4/2/1; Pooideae)
*Agrostis bourgeaei E. Fourn. (CDM, GTO, HGO, MÉX, MICH, OAX, TLX).
**Agrostis calderoniae Acosta Cast. (MÉX).
Agrostis elliottiana Schult. (YUC).
Agrostis exarata Trin. (BC, CHIH, COAH, CDM, DGO, GTO, HGO).
Agrostis ghiesbreghtii E. Fourn. (CHIS, GRO, HGO, MÉX, MOR, OAX, PUE, VER).
+Agrostis gigantea Roth (MÉX, SLP).
Agrostis hyemalis (Walter) Britton, Sterns & Poggenb. (MICH, QRO, VER).
Agrostis laxissima Swallen (CHIS).
*Agrostis liebmannii (E. Fourn.) Hitchc. (CDM, DGO, MÉX, OAX, PUE, QRO, VER).
Agrostis mertensii Trin. (MÉX).
Agrostis microphylla Steud. (BC).
**Agrostis novogaliciana McVaugh (JAL).
Agrostis pallens Trin. (BC).
Agrostis perennans (Walter) Tuck. (CHIS, CDM, DGO, GTO, HGO, MÉX, MICH, MOR, OAX, PUE, QRO, SLP, TLX, VER).
*Agrostis rosei Scribn. & Merr. (CDM, DGO, ZAC).
Agrostis scabra Willd. (AGS, BC, CHIH, CHIS, COAH, DGO, GTO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, S.L.P, VER).
*Agrostis schaffneri E. Fourn. (CHIS, CDM, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, TLX, VER).
Agrostis stolonifera L.
Agrostis stolonifera var. palustris (Huds.) Farw. (BC, CHIS, CDM, HGO, JAL, MÉX, PUE, TLX, VER).
Agrostis subpatens Hitchc. (CHIS, CDM, HGO, JAL, MÉX, PUE, TLX, VER).
Agrostis tolucensis Kunth (CHIS, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, OAX, PUE, TLX, VER).
Agrostis virescens Kunth (CHIS, CDM, GRO, JAL, MÉX, MICH, MOR, OAX, PUE, TLX, VER).
Aira (1/0/0/1; Pooideae)
+Aira caryophyllea L. (BC, JAL, OAX).
Allolepis (1/0/0/0; Chloridoideae)
Allolepis texana (Vasey) Soderstr. & H.F. Decker (COAH).
Alopecurus (2/0/0/0; Pooideae)
Alopecurus geniculatus L. (CHIH).
Alopecurus saccatus Vasey (BC).
Andropogon (14/1/0/0; Panicoideae)
Andropogon angustatus (J. Presl) Steud. (CHIS, GRO, MÉX, NAY, OAX).
Andropogon bicornis L. (CAM, CHIS, GRO, HGO, JAL, MÉX, MICH, NAY, OAX, PUE, TAB, TAM, VER, YUC).
Andropogon bourgeaei Hack. (CHIS, OAX, TAB, VER, YUC).
Andropogon fastigiatus Sw. CHIH, CHIS, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, SIN, VER).
Andropogon gerardi Vitman
Andropogon gerardi Vitman var. gerardi (CHIS, COAH, DGO, GTO, MÉX, MICH, SIN).
Andropogon glomeratus (Walter) Britton, Sterns & Poggenb.
Andropogon glomeratus (Walter) Britton var. glomeratus (BC, BCS, COL, SIN, SON).
Andropogon glomeratus var. pumilus (Vasey) Vasey ex L.H. Dewey (AGS, CAM, CHIH, CHIS, COAH, DGO, GTO. GRO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, QROO, SLP, TAB, TAM, TLX, VER, YUC, ZAC).
Andropogon gyrans Ashe (CHIS, PUE, SLP, VER).
Andropogon leucostachyus Kunth (CAM, CHIS, GRO, OAX, TAB, VER, YUC).
Andropogon liebmannii Hack. (CDM, HGO, JAL, MÉX, MICH, NAY, OAX, PUE, VER).
*Andropogon pringlei Scribn. & Merr. (CHIS, CDM, DGO, JAL, MÉX, MICH, OAX, PUE, VER, ZAC).
Andropogon selloanus (Hack.) Hack. (CAM, CHIS, OAX, TAB, VER, YUC).
Andropogon ternarius Michx. (COAH).
Andropogon virgatus Desv. ex Ham. (CHIS).
Andropogon virginicus L. (CAM, CHIS, COAH, DGO, NL, OAX, PUE, QROO, TAB, VER, YUC).
Anthaenantia (2/0/1/0; Panicoideae)
Anthaenantia lanata (Kunth) Benth. (CAM, CHIS, COL, GRO., GTO., JAL, MÉX, MICH, NAY, OAX, PUE, QROO, SLP, TAB, TAM, VER, YUC).
**Anthaenantia villaregalis (McVaugh & R. Guzmán) Espejo & López-Ferrari (JAL).
Anthephora (1/0/0/0; Panicoideae)
Anthephora hermaphrodita (L.) Kuntze (BC, BCS, CAM, CHIS, COL, CDM, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, SIN, SON, VER, YUC).
Anthoxanthum (1/0/0/1; Pooideae)
+Anthoxanthum odoratum L. (CHIH, CHIS, CDM, DGO, HGO, MÉX, OAX).
Aristida (33/8/5/0; Aristidoideae)
Aristida adscensionis L. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, VER, YUC, ZAC).
Aristida appressa Vasey (CAM, CHIH, CHIS, CDM, DGO, GTO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SLP, VER, YUC, ZAC).
Aristida arizonica Vasey (BC, CHIH, COAH, COAH, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, SLP, SIN, SON, TAM, ZAC).
Aristida californica Thurb.
Aristida californica var. glabrata Vasey (BC, BCS, SON).
Aristida capillacea Lam. (CHIS, COL, CDM, JAL, MÉX, NAY, OAX, SIN, VER).
Aristida divaricata Humb. & Bonpl. ex Willd. (AGS, BC, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, NAY, NL, OAX, PUE, SLP, SON, TAM, TLX, VER, ZAC).
*Aristida eludens Allred & Valdés-Reyna (CHIH, COAH, DGO, GTO, NL, OAX, QRO, SLP).
Aristida floridana (Chapm.) Vasey (CAM, QROO, YUC).
**Aristida geminiflora E. Fourn. (VER).
Aristida gibbosa (Nees) Kunth (CAM, CHIH, CHIS, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, NAY, OAX, PUE, SIN, SON, TLX, VER).
Aristida gypsophila Beetle
*Aristida gypsophila fo. diffusa Allred & Valdés-Reyna (CHIH, SLP).
*Aristida gypsophila Beetle fo. gypsophila (COAH, SLP).
Aristida gypsophila fo. gypsophiloides Allred & Valdés-Reyna (CHIH, COAH, SLP).
Aristida hamulosa Henrard (AGS, BC, CHIH, CHIS, CDM, DGO, GTO, JAL, MÉX, OAX, PUE, QRO, SLP, SON, VER, ZAC).
Aristida havardii Vasey (AGS, BC, CHIH, COAH, CDM, DGO, GTO, JAL, MÉX, NL, PUE, SLP, SON, VER, ZAC).
*Aristida hintonii Hitchc. (CDM, GRO, JAL, MÉX, MICH, NAY, OAX, TAM).
*Aristida hitchcockiana Henrard (GTO, JAL, NAY, OAX, PUE, QRO, ZAC).
*Aristida jaliscana R. Guzmán & Jaramillo (GTO, JAL).
Aristida jorullensis Kunth (CAM, CHIS, COL, CDM, GRO, JAL, MÉX, MICH, NAY, OAX, PUE,QROO, SIN, SON, VER, YUC).
Aristida laxa Cav.
*Aristida laxa var. karwinskiana (Trin. & Rupr.) Henrard (CDM, GTO, HGO, MÉX, MICH).
Aristida laxa Cav. var. laxa (CHIH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SLP, SIN, SON, VER, ZAC).
Aristida laxa var. longiramea (J. Presl) Henrard (GRO, JAL, MICH, OAX).
Aristida liebmannii E. Fourn. (CHIS, OAX, VER).
Aristida longespica Poir. (CHIH, COAH, TAM, ZAC).
*Aristida mexicana Scribn. ex Henrard (AGS, CDM, GTO, JAL, MÉX, PUE).
Aristida pansa Wooton & Standl.
*Aristida pansa fo. contracta Allred & Valdés-Reyna (COAH, DGO, NL, TAM, ZAC).
Aristida pansa fo. dissita (I.M. Johnst.) Allred & Valdés-Reyna (CHIH, COAH, NL, OAX, PUE, SLP, TAM, ZAC).
Aristida pansa Wooton & Standl. fo. pansa (CHIH, COAH, COL, DGO, GTO, HGO, JAL, NL, OAX, PUE, QRO, SLP, TAM, ZAC).
**Aristida petersonii Allred & Valdés-Reyna (OAX).
Aristida purpurascens Poir., Encycl. Suppl. 1: 452. 1810.
Aristida purpurascens var. tenuispica (Hitchc.) Allred (CHIS).
Aristida purpurea Nutt.
Aristida purpurea fo. brownii (Warnock) Allred & Valdés-Reyna (AGS, BC, COAH, GTO, NL, PUE, SLP, TAM, VER, ZAC).
*Aristida purpurea var. curvifolia (E. Fourn.) Allred (AGS, COAH, DGO, NL, OAX, PUE, SLP, TAM, VER, ZAC).
Aristida purpurea var. fendleriana (Steud.) Vasey (BC, CHIH, COAH, NL, SLP, TAM, ZAC).
Aristida purpurea var. longiseta (Steud.) Vasey (AGS, BC, CHIH, COAH, DGO, GTO, NL, PUE, QRO, SLP, SON, TAM, VER, ZAC).
Aristida purpurea var. nealleyi (Vasey) Allred (AGS, BC, BCS, CHIH, COAH. DGO, GTO, NL, PUE, QRO, SLP, SON, TAM, VER, ZAC).
Aristida purpurea var. parishii (Hitchc.) Allred (BC, SON).
Aristida purpurea var. perplexa Allred & Valdés-Reyna (CHIH, COAH, NL, SLP, ZAC).
Aristida purpurea Nutt. var. purpurea (CHIH, COAH, DGO, HGO, NL, PUE, SLP, SON, TAM, VER, ZAC).
Aristida purpurea var. wrightii (Nash) Allred (AGS, CHIH, COAH, CDM, DGO, MÉX, NL, OAX, PUE, SLP, SIN, TAM, ZAC).
**Aristida purpusiana Hitchc. (BCS).
Aristida schiedeana Trin. & Rupr.
Aristida schiedeana var. orcuttiana (Vasey) Allred & Valdés-Reyna (AGS, BC, CHIH, COAH, DGO, GTO, MICH, NL, SIN, SON).
Aristida schiedeana Trin. & Rupr. var. schiedeana (AGS, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, SLP, TAM, TLX, VER, ZAC).
*Aristida scribneriana Hitchc. (AGS, DGO, GTO, GRO, JAL, MICH, ZAC).
*Aristida spanospicula Allred, Valdés-Reyna & Sánchez-Ken (CHIH, DGO, SIN, SON).
**Aristida tenuifolia Hitchc. (COL).
Aristida ternipes Cav.
Aristida ternipes var. minor (Vasey) Hitchc. (BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, VER, YUC, ZAC).
Aristida ternipes Cav. var. ternipes (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAM, VER, YUC, ZAC).
**Aristida tuitensis Sánchez-Ken & Dávila (JAL).
*Aristida vaginata Hitchc. (COL, JAL).
Arrhenatherum (1/0/0/1; Pooideae)
+Arrhenatherum elatius (L.) P. Beauv. ex J. Presl. & C. Presl. (CDM).
Arthraxon (1/0/0/1; Panicoideae)
+Arthraxon hispidus (Thunb.) Makino
+Arthraxon hispidus var. hispidus (CHIS, COL, MICH).
Arthrostylidium (1/0/0/0; Bambusoideae)
Arthrostylidium excelsum Griseb. (CHIS).
Arundinella (3/0/0/0; Panicoideae)
Arundinella berteroniana (Schult.) Hitchc. & Chase (CHIS, COL, CDM, GRO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, SLP, SIN, TAB, TAM, VER).
Arundinella deppeana Nees ex Steud. (CAM, CHIS, COL, CDM, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QROO, SIN, TAB, VER, YUC).
Arundinella hispida (Humb. & Bonpl. ex Willd.) Kuntze (CHIS, CDM, DGO, GRO, JAL, MÉX, MICH, NAY, OAX, SON, TAB, VER).
Arundo (1/0/0/1; Arundinoideae)
+Arundo donax L.
+Arundo donax L. fo. donax (CHIH, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MOR, NAY, NL, OAX, PUE, PUE, QRO, QROO, SIN SON, TAM, VER, YUC, ZAC).
+Arundo donax fo. versicolor (Mill.) Beetle (CHIH, CHIS, COAH, COL, GTO, GRO, HGO, JAL, MÉX, MOR, NAY, NL, OAX, PUE, QRO, SIN, SON, TAM, VER, ZAC).
Aulonemia (1/1/0/0; Bambusoideae)
*Aulonemia laxa (F. Maek.) McClure (CHIS, GRO, VER).
Avena (2/0/0/2; Pooideae)
+Avena fatua L. (AGS, BC, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, SLP, SON, TAM, TLX, VER, YUC).
+Avena sativa L. (AGS, BC, CHIH, CHIS, COAH, CDM, DGO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, SON, VER).
Avenella (1/0/0/0; Pooideae)
Avenella flexuosa (L.) Drejer (MÉX).
Axonopus (12/2/1/0; Panicoideae)
Axonopus arsenei Swallen (COL, MÉX, MICH, OAX).
Axonopus aureus P. Beauv. (CHIS, OAX, TAB).
Axonopus centralis Chase (CHIS, COL, GRO, JAL, NAY).
Axonopus chrysoblepharis (Lag.) Chase (CHIS).
Axonopus compressus (Sw.) P. Beauv. (CAM, CHIS, COL, CDM, GRO, HGO, JAL, MÉX, MICH, NAY, NL, OAX, PUE, QRO, QROO, SIN, SON, TAB, TAM, VER, YUC).
*Axonopus deludens Chase (JAL, NAY, SIN).
Axonopus fissifolius (Raddi) Kuhlm. (CAM, CHIS, HGO, JAL, OAX, PUE, QRO, QROO, TAB, VER, YUC).
*Axonopus mexicanus G.A. Black (DGO, SIN).
Axonopus poiophyllus Chase (CHIS, OAX, PUE, TAM, VER).
Axonopus purpusii (Mez) Chase (CAM, CHIS, COL, OAX, PUE, TAB, VER).
**Axonopus rosei (Scribn. & Merr.) Chase (NAY).
Axonopus scoparius (Flüggé) Kuhlm. (CHIS, OAX).
Bambusa (3/0/0/3; Bambusoideae)
+Bambusa multiplex (Lour.) Raeusch. ex Schult. & Schult. f. (CHIS).
+Bambusa tuldoides Munro (CHIS).
+Bambusa vulgaris Schrad. ex J.C. Wendl. (CAM, CHIS, COAH, CDM, JAL., MÉX, MOR, NAY, NL, OAX, SON, TAM, VER, YUC).
Blepharidachne (1/0/0/0; Chloridoideae)
Blepharidachne bigelovii (S. Watson) Hack. (COAH, NL).
Bothriochloa (16/0/0/1; Panicoideae)
Bothriochloa alta (Hitchc.) Henrard (CHIH, CHIS, COAH, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, QRO, SLP TAM, ZAC, VER).
Bothriochloa barbinodis (Lag.) Herter (AGS, BC, BCS, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SON, VER, ZAC).
+Bothriochloa bladhii (Retz.) S.T. Blake (YUC).
Bothriochloa edwardsiana (Gould) Parodi (OAX).
Bothriochloa hirtifolia (J. Presl) Henrard (CHIS, COAH, CDM, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, VER).
Bothriochloa hybrida (Gould) Gould (COAH, CDM, MÉX, NL, OAX, OAX, QRO, SLP, TAM).
Bothriochloa ischaemum (L.) Keng
+Bothriochloa ischaemum (L.) Keng var. ischaemum (CAM, COAH, MICH, NAY, NL, PUE, QROO, SON, TAM, YUC).
+Bothriochloa ischaemum var. songarica (Rupr. ex Fisch. & Meyen) Celarier & J.R. Harlan (CAM, COAH, MICH, NAY, NL, OAX, PUE, QROO, SON, TAM, YUC).
Bothriochloa laguroides (DC.) Herter
Bothriochloa laguroides (DC) Herter var. laguroides (CHIS, CDM, GTO, HGO, MÉX, MOR, OAX, PUE, TAB, TLX, VER).
Bothriochloa laguroides var. torreyana (Steud.) M. Marchi & Longhi-Wagner (BC, CHIH, COAH, JAL, MICH, NL, QRO, SLP, SON, TAM, ZAC).
Bothriochloa longipaniculata (Gould) Allred & Gould (CHIH, COAH, NL, TAM).
Bothriochloa palmeri (Hack.) Pilg. (DGO, GTO, JAL, MICH, ZAC).
Bothriochloa perforata (Trin. ex. E. Fourn.) Herter (CHIH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, OAX, SLP, VER, ZAC).
Bothriochloa pertusa (L.) A. Camus (CAM, CHIS, HGO, NAY, NL, OAX, QRO, QROO, SLP, SON, TAM, VER, YUC).
Bothriochloa reevesii (Gould) Gould (COAH, HGO, MÉX, NL, OAX, PUE, SLP, TAM).
Bothriochloa saccharoides (Sw.) Rydb.
Bothriochloa saccharoides var. parvispicula (Hitchc.) Tovar (CHIS, OAX).
Bothriochloa saccharoides (Sw.) Rydb. var. saccharoides (DGO, QROO, VER).
Bothriochloa springfieldii (Gould) Parodi (CHIH, COAH, DGO, NAY, PUE, ZAC).
Bothriochloa wrightii (Hack.) Henrard (CHIH, DGO, GTO, MOR, NL, SLP, VER, ZAC).
Bouteloua (52/16/6/0; Chloridoideae)
Bouteloua alamosana Vasey (CHIS, OAX, SON).
Bouteloua americana (L.) Scribn. (CAM, CHIS, YUC).
*Bouteloua annua Swallen (BCS, SON).
Bouteloua aristidoides (Kunth) Griseb.
Bouteloua aristidoides (Kunth) Griseb. var. aristidoides (AGS, BC, BCS, CHIH, COAH, COL, DGO, JAL, NAY, NL, OAX, QRO, SLP, SIN, SON, ZAC).
Bouteloua aristidoides var. arizonica M.E. Jones (CHIH, SON).
Bouteloua barbata Lag.
Bouteloua barbata Lag. var. barbata (AGS, BC, BCS, CHIH, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, ZAC).
Bouteloua barbata var. rothrockii (Vasey) Gould (BCS, CHIH, DGO, JAL, SLP, SIN, SON).
*Bouteloua barbata var. sonorae (Griffiths) Gould (BC, BCS, SIN, SON).
**Bouteloua bracteata (McVaugh) Columbus (MICH).
Bouteloua breviseta Vasey (CHIH).
*Bouteloua chasei Swallen (COAH, NL, S.L.P, ZAC).
**Bouteloua chihuahuana (M.C. Johnston) Columbus (CHIH).
Bouteloua chondrosioides (Kunth) Benth. ex S. Watson (AGS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, NL, OAX, PUE, SLP, SON, TAM, ZAC).
Bouteloua curtipendula (Michx.) Torr.
Bouteloua curtipendula var. caespitosa Gould & Kapadia (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, TLX, VER, ZAC).
Bouteloua curtipendula (Michx.) Torr. var. curtipendula (CHIH, COAH, CDM, NL, PUE, TAM, ZAC).
Bouteloua curtipendula var. tenuis Gould & Kapadia (AGS, CHIH, CHIS, COAH, CDM, DGO, GTO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, TAM, TLX, VER, ZAC).
Bouteloua dactyloides (Nutt.) Columbus (AGS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, NL, PUE, QRO, SLP, SON, TAM, TLX, ZAC).
Bouteloua dimorpha Columbus (CAM, CHIS, COL, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, S.L.P, VER, YUC).
*Bouteloua distans Swallen (NL, OAX, PUE).
Bouteloua disticha (Kunth) Benth. (CAM, GRO, JAL, MICH, MOR, NAY, NL, OAX, TAM, YUC).
Bouteloua diversispicula Columbus (AGS, CHIH, CHIS, COL, GTO, GRO, JAL, MICH, MOR, NAY, OAX, PUE, SLP SIN, SON, ZAC).
*Bouteloua elata Reeder & C. Reeder (CHIS, COL, GRO, JAL, NAY, OAX).
Bouteloua eludens Griffiths (CHIH, COAH, SON).
Bouteloua erecta (Vasey & Hack.) Columbus (CHIH, COAH, NL, SON, TAM, ZAC).
Bouteloua eriopoda (Torr.) Torr. (CHIH, COAH, SON, TAM, ZAC).
**Bouteloua eriostachya (Swallen) Reeder (COAH).
Bouteloua gracilis (Kunth) Lag. ex Griffiths (AGS, CHIH, COAH, CDM, DGO, GRO, GTO, HGO, JAL, MÉX, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
*Bouteloua griffithsii Columbus (GRO, JAL, MICH, MOR, OAX, PUE, QRO).
**Bouteloua herrera-arrietae P.M. Peterson & Romasch. (NL).
Bouteloua hirsuta Lag.
Bouteloua hirsuta var. glandulosa (Cerv.) Gould (AGS, BCS, CHIH, CHIS, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, SON, TLX, VER, ZAC).
Bouteloua hirsuta Lag. var. hirsuta (AGS, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, SLP, SIN, SON, TAB, TAM, TLX, VER, ZAC).
**Bouteloua johnstonii Swallen (COAH).
*Bouteloua karwinskii (E. Fourn.) Griffiths (COAH, NL, SLP, TAM, ZAC).
Bouteloua media (E. Fourn.) Gould & Kapadia (BCS, CHIS, COL, CDM, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SLP, VER).
Bouteloua mexicana (Scribn.) Columbus (GRO).
*Bouteloua multifida (Griffiths) Columbus (GRO, MÉX, MICH, MOR, OAX, PUE, SON).
*Bouteloua nervata Swallen (HGO, MÉX).
Bouteloua parryi (E. Fourn.) Griffiths
*Bouteloua parryi var. gentryi (Gould) Gould (DGO, JAL, SIN).
Bouteloua parryi (E. Fourn.) Griffiths var. parryi (CHIH, COAH, COL, CDM, DGO, GTO, JAL, MÉX, MOR, NL, PUE, SLP, SIN, SON, ZAC).
*Bouteloua pedicellata Swallen (GTO, HGO, NL, PUE, TLX, VER).
*Bouteloua polymorpha (E. Fourn.) Columbus (AGS, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN, SON, ZAC).
*Bouteloua purpurea Gould & Kapadia (CDM, GTO, HGO, MÉX, MICH, QRO, SLP).
**Bouteloua quiriegoensis Beetle (SON).
Bouteloua radicosa (E. Fourn.) Griffiths (AGS, BCS, CHIH, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, SLP, SON, TAM, TLX, VER, ZAC).
Bouteloua ramosa Scribn. ex Vasey (CHIH, COAH, DGO, NL, TAM, ZAC).
*Bouteloua reederorum Columbus (OAX, PUE).
*Bouteloua reflexa Swallen (BC, BCS, NAY, SIN, SON). ,
Bouteloua repens (Kunth) Scribn. & Merr. (AGS, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAB, TAM, VER, YUC, ZAC).
Bouteloua rigidiseta (Steud.) Hitchc. (COAH, DGO, NL, SON, TAM).
Bouteloua scabra (Kunth) Columbus (CHIS, HGO, QRO, TAB).
*Bouteloua scorpioides Lag. (AGS, BC, BCS, CHIH, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MOR, NL, OAX, PUE, QRO, SLP, TAM, TLX, ZAC).
Bouteloua simplex Lag. (AGS, BC, BCS, CHIH, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MOR, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
*Bouteloua stolonifera Scribn. (AGS, CDM, DGO, HGO, MÉX, SLP, ZAC).
Bouteloua triaena (Trin. ex Spreng.) Scribn. (CAM, CHIS, COAH, COL, CDM, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QROO, SIN, YUC).
Bouteloua trifida Thurb. (BC, CHIH, COAH, GTO, NL, SLP, SON, TAM).
Bouteloua uniflora Vasey
*Bouteloua uniflora var. coahuilensis Gould & Kapadia (AGS, COAH, DGO, GTO, NL, QRO, TAM, ZAC).
Bouteloua uniflora Vasey var. uniflora (AGS, COAH, NL, PUE, QRO, SLP, TAM).
*Bouteloua varia (Swallen) Columbus (JAL, MICH, OAX, PUE).
Bouteloua warnockii Gould & Kapadia (CHIH, COAH, NL, SON, TAM).
Bouteloua williamsii Swallen (AGS, CHIS, GRO, JAL, MÉX, NAY, OAX, PUE, ZAC).
Brachiaria (1/0/0/1; Panicoideae)
+Brachiaria eruciformis (Sm.) Griseb. (COAH).
Brachypodium (3/2/0/1; Pooideae)
+Brachypodium distachyon (L.) P. Beauv. (BC).
*Brachypodium mexicanum (Roem. & Schult.) Link
Brachypodium mexicanum var. inerme Beetle (COAH, NL, TAM).
Brachypodium mexicanum (Roem. & Schult.) Link var. mexicanum (BCS, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, TAM, TLX, VER, ZAC).
*Brachypodium pringlei Scribn. ex Beal (COAH, NL, TAM).
Briza (1/0/0/1; Pooideae)
+Briza minor L. (CHIS, CDM, MÉX, MICH, MOR, OAX, PUE, VER).
Bromidium (1/0/0/0; Pooideae)
Bromidium tandilense (Kuntze) Rúgolo (BC).
Bromus (22/2/1/6; Pooideae)
Bromus anomalus Rupr. ex E. Fourn. (AGS, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, S.LP., TAM, TLX, VER, ZAC).
Bromus arizonicus (Shear) Stebbins (BC, SON).
*Bromus attenuatus Swallen (HGO, NL, SLP, TAM).
Bromus berteroanus Colla (BC, SON).
Bromus carinatus Hook. & Arn.
Bromus carinatus Hook. & Arn. var. carinatus (BC, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, SLP, TAM, TLX, VER).
Bromus carinatus var. marginatus (Nees) Barkworth & Anderton (AGS, BC, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, TLX, VER, ZAC).
+Bromus catharticus Vahl
+Bromus catharticus Vahl. var. catharticus (AGS, BC, CHIH, COAH, CDM, DGO, HGO, JAL, NL, PUE, QRO, SLP, SON, TLX, VER, ZAC).
*Bromus densus Swallen (COAH, NL, SLP, TAM).
+Bromus diandrus Roth (BC, COL, CDM, MÉX, MOR, OAX, PUE, SLP, TLX, VER).
Bromus dolichocarpus Wagnon (CHIS, CDM, DGO, GRO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, VER).
Bromus exaltatus Bernh. (CHIS, CDM, GRO, HGO, JAL, MÉX, OAX, PUE, QRO, SLP, SON, TLX, VER).
Bromus frondosus (Shear) Wooton & Standl. (CHIH, COAH, DGO, SIN, SON).
Bromus hordeaceus L. (BC, BCS).
+Bromus inermis Leysser (COAH).
Bromus japonicus Houtt. (CHIH, COAH, JAL).
Bromus lanatipes (Shear) Rydb. (COAH).
+Bromus madritensis L. (BC).
**Bromus pinetorum Swallen (COAH).
Bromus pseudolaevipes Wagnon (BC).
Bromus richardsonii Link (BC, BCS, CHIH, COAH, DGO, MICH, NL, QRO, TLX).
+Bromus rubens L. (BC, BCS, SON).
Bromus secalinus L. (VER).
+Bromus tectorum L. (BC, CHIH, COAH).
Calamagrostis (12/5/0/0); Pooideae
*Calamagrostis erectifolia Hitchc. (COL, JAL, PUE).
*Calamagrostis eriantha (Kunth) Steud. (CDM, MÉX. OAX, PUE, VER).
Calamagrostis guatemalensis Hitchc. (CHIS).
Calamagrostis intermedia (J. Presl) Steud. (CDM, MÉX, OAX, VER).
*Calamagrostis orizabae (Rupr. ex E. Fourn.) Beal (COL, CDM, MÉX, MOR, OAX, PUE, VER).
*Calamagrostis pringlei Scribn. ex Beal (AGS, CHIH, COAH, DGO, HGO, MICH, NL, ZAC).
Calamagrostis purpurascens R. Br.
Calamagrostis purpurascens R. Br. var. purpurascens (COAH, NL).
Calamagrostis rigescens (J. Presl) Scribn. (VER).
Calamagrostis tolucensis (Kunth) Trin. ex Steud. (CHIS, CDM, GRO, JAL, MÉX, MICH, OAX, PUE, TLX, VER).
*Calamagrostis valida Sohns (COL, DGO, JAL, MICH, SIN).
Calamagrostis viridiflavescens (Poir.) Steud.
Calamagrostis viridiflavescens var. montevidensis (Nees) Kämpf (CHIS).
Calamagrostis vulcanica Swallen (CHIS).
Catapodium (1/0/0/1; Pooideae)
+Catapodium rigidum (L.) Dony (NL).
Cenchrus (20/4/0/5; Panicoideae)
Cenchrus americanus (L.) Morrone (CHIH, MÉX, NL, OAX).
Cenchrus bambusiformis (E. Fourn.) Morrone (CHIS, CDM, GTO, HGO, JAL, MICH, NL, OAX, PUE, SLP, VER, ZAC).
+Cenchrus brownii Roem. & Schult. (BC, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, TAB, TAM, VER, YUC, ZAC).
+Cenchrus ciliaris L. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MICH, NAY, NL, OAX, QROO, SLP, SIN, SON, TAM, VER, ZAC).
+Cenchrus clandestinus (Hochst. ex Chiov.) Morrone (CHIS, CHIH, COL, CDM, DGO, HGO, JAL, MÉX, MICH, MOR, NL, PUE, QRO, SLP, TLX, VER, ZAC).
Cenchrus complanatus (Ness) Morrone (VER).
Cenchrus crinitus (Kunth) Morrone (MICH, VER).
*Cenchrus distachyus (E. Fourn.) Morrone (CHIS, MÉX, MICH, OAX, PUE, VER).
*Cenchrus durus (Beal) Morrone (CHIH, MÉX, OAX, VER).
Cenchrus echinatus L. (AGS, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, VER, YUC, ZAC).
Cenchrus incertus M.A. Curtis (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MOR, NAY, NL, OAX, PUE, QRO, QROO, S.L.P, SIN, SON, TAB, TAM, TLX, VER, YUC, ZAC).
Cenchrus longispinus (Hack.) Fernald (CHIH, CHIS, DGO, GRO, JAL, MICH, OAX, SON).
Cenchrus multiflorus J. Presl (CHIH, CHIS, COAH, GRO, JAL, MÉX, MICH, NAY, OAX, SON, ZAC).
Cenchrus myosuroides Kunth
Cenchrus myosuroides Kunth var. myosuroides (BC, BCS, SIN, SON).
+Cenchrus orientalis (Rich.) Morrone (COAH, GTO, GRO, MÉX, MICH, MOR, VER).
*Cenchrus palmeri Vasey (BC, BCS, SIN, SON).
Cenchrus pilosus Kunth (CAM, CHIS, COL, CDM, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, VER, YUC, ZAC).
Cenchrus polystachios (L.) Morrone (CHIH, CHIS, NAY, OAX, PUE, SIN, VER).
*Cenchrus prolificus (Chase), Morrone (GRO, OAX, VER).
+Cenchrus purpureus (Schumach.) Morrone (CAM, CHIS, HGO, JAL, MÉX, MOR, NL, OAX, PUE, QRO, QROO, TAB, VER, YUC).
Chaetium (1/0/0/0; Panicoideae)
Chaetium bromoides (J. Presl) Benth. ex Hemsl. (CAM, CHIH, CHIS, COL, CDM, GRO, JAL, MÉX, MICH, NAY, OAX, PUE, VER).
Chascolytrum (1/0/0/0; Pooideae)
Chascolytrum subaristatum (Lam.) Desv. (CHIS, COAH, COL, CDM, DGO, MÉX, OAX, PUE, SLP, VER, ZAC).
Chasmanthium (2/0/1/0; Panicoideae)
**Chasmanthium curvifolium (Valdés-Reyna, Morden & S.L. Hatch) Wipff & S.D. Jones (TAM).
Chasmanthium latifolium (Michx.) H.O. Yates (NL).
Chloris (10/0/1/2; Chloridoideae)
Chloris andropogonoides E. Fourn. (COAH, NL, SLP, TAM).
Chloris barbata Sw. (BCS, CAM, CHIS, COL, GRO, JAL, MICH, OAX, QROO, SLP, SIN, TAB, TAM, VER, YUC).
Chloris cucullata Bisch. (COAH, NL, TAM, YUC).
+Chloris gayana Kunth (AGS, CHIH, CHIS, COAH, COL, DGO, GTO, JAL, MÉX, MICH, MOR, NL, OAX, QRO, SLP, TAB, TAM, VER, YUC, ZAC).
Chloris pycnothrix Trin. (GTO, GRO, JAL, MICH, MOR, PUE).
Chloris radiata (L.) Sw. (GTO, GRO, JAL, MICH, OAX, SLP, TAB, VER).
Chloris rufescens Lag. (AGS, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, VER, ZAC).
Chloris submutica Kunth (AGS, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, NAY, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
**Chloris truncata R. Br. (SON).
+Chloris virgata Sw. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, VER, YUC, ZAC).
Chrysopogon (1/0/0/1; Panicoideae)
+Chrysopogon zizanioides (L.) Roberty (CHIS, VER).
Chusquea (21/8/5/0; Bambusoideae)
*Chusquea aperta L.G. Clark (OAX, VER).
*Chusquea bilimekii E. Fourn. (MÉX, VER).
*Chusquea circinata Soderstr. & C.E. Calderón (CHIS, COL, JAL, MICH, NAY, OAX).
Chusquea coronalis Soderstr. & C.E. Calderón (CHIS).
Chusquea cortesii L.G. Clark & Ruíz-Sánchez (CHIS, GRO, JAL, MÉX, MICH, NAY).
**Chusquea enigmatica Ruíz-Sánchez, L.G. Clark &Mejia-Saulés (VER).
*Chusquea galeottiana Rupr. ex Munro (GRO, OAX).
*Chusquea gibcooperi Ruíz-Sánchez, Mejia-Saulés, Cortes & L.G. Clark (HGO, PUE, VER).
**Chusquea glauca L.G. Clark (VER).
Chusquea lanceolata Hitchc. (CHIS).
Chusquea liebmannii E. Fourn. (CHIS, COL, GRO, JAL, MICH, OAX, SIN).
Chusquea longifolia Swallen (CHIS).
**Chusquea matlatzinca L.G. Clark & Ruíz-Sánchez (MICH).
**Chusquea mulleri Munro (VER).
**Chusquea nedjaquithii Ruíz-Sánchez, Mejia-Saulés & L.G. Clark (OAX).
*Chusquea nelsonii Scribn. & J.G. Sm. (GRO, MICH).
*Chusquea perotensis L.G. Clark, G. Cortés & Cházaro (OAX, VER).
Chusquea pittieri Hack. (CHIS).
*Chusquea repens L.G. Clark & Londoño, Nordic J. Bot. 11(3): 327. 1991.
**Chusquea repens subsp. oaxacensis L.G. Clark & Londoño (OAX).
*Chusquea repens L.G. Clark & Londoño subsp. repens (CHIS, OAX).
Chusquea simpliciflora Munro (CHIS).
Chusquea sulcata Swallen (CHIS, OAX, VER).
Cinna (1/0/0/0; Pooideae)
Cinna poiformis (Kunth) Scribn. & Merr. (CHIS, CDM, HGO, MÉX, MICH, MOR, OAX, PUE, VER).
Coix (1/0/0/1; Panicoideae)
+Coix lacryma-jobi L.
+Coix lacryma-jobi L. var. lacryma-jobi (CHIS, COAH, CDM, JAL, MÉX, NL, OAX, TAB, VER, YUC).
Coleataenia (3/0/0/0; Panicoideae)
Coleataenia caricoides (Nees ex Trin.) Soreng (CHIS).
Coleataenia stenodes (Griseb.) Soreng (CHIS).
Coleataenia tenera (Beyr. ex Trin.) Soreng (QROO).
Cortaderia (1/0/0/1; Danthonioideae)
+Cortaderia selloana (Schult. & Schult.f.) Asch. & Graebn. (BC, CHIH, CHIS, COAH, CDM, DGO, GTO, MÉX, MICH, MOR, NL, PUE, QRO, SON, VER).
Cottea (1/0/0/0; Chloridoideae)
Cottea pappophoroides Kunth (CHIH, COAH, DGO, JAL, NL, OAX, PUE, SLP, SON, ZAC).
Cryptochloa (1/0/0/0; Bambusoideae)
Cryptochloa strictiflora (E. Fourn.) Swallen (CHIS, OAX, PUE, TAB, VER).
Ctenium (2/2/0/0; Chloridoideae)
*Ctenium planifolium (J. Presl) Kunth (CHIS, MÉX, OAX, ZAC).
*Ctenium plumosum (Hitchc.) Swallen (JAL, NAY, SIN).
Cymbopogn (2/0/0/2; Panicoideae)
+Cymbopogon citratus (DC.) Stapf (CAM, CHIS, JAL, NL, OAX, TAB, VER, YUC).
+Cymbopogon nardus (L.) Rendle (COAH, NL, OAX, YUC).
Cynodon (3/0/0/3; Chloridoideae)
+Cynodon dactylon (L.) Pers. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, TLX, VER, YUC, ZAC).
+Cynodon nlemfuensis Vanderyst (AGS, CAM, CHIS, JAL, OAX, QROO, TAB, TAM, VER, YUC).
+Cynodon plectostachyus (K. Schum.) Pilg. (BC, CAM, COL, DGO, HGO, NAY, NL, OAX, PUE, QRO, QROO, SLP, SON, TAB, TAM, VER, YUC).
Cynosurus (1/0/0/1; Pooideae)
+Cynosurus echinatus L. (BC).
Cyrtococcum (1/0/0/1; Panicoideae)
+Cyrtococcum trigonum (Retz.) A. Camus (CHIS).
Dactylis (1/0/0/1; Pooideae)
+Dactylis glomerata L. (BC, CHIH, CHIS, COAH, CDM, MÉX, MICH, NL, OAX, PUE, SLP, VER).
Dactyloctenium (4/0/0/4; Chloridoideae)
+Dactyloctenium aegyptium (L.) Willd. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, VER, YUC, ZAC).
+Dactyloctenium aristatum Link (YUC).
+Dactyloctenium geminatum Hack. (CAM, GRO, QROO).
+Dactyloctenium scindicum Boiss. (BCS, YUC).
Danthonia (3/0/1/0; Danthonioideae)
**Danthonia chiapasensis Davidse (CHIS).
Danthonia secundiflora J. Presl
Danthonia secundiflora J. Presl subsp. secundiflora (CHIS, HGO, PUE).
Danthonia spicata (L.) P. Beauv. ex Roem. & Schult. (COAH, HGO, PUE, TAM, VER).
Dasyochloa (1/0/0/0; Chloridoideae)
Dasyochloa pulchella (Kunth) Willd. ex Rydb. (AGS, BC, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, NL, QRO, SLP, SON, TAM, ZAC).
+Dendrocalamopsis (1/0/0/1; Bambusoideae)
+Dendrocalamopsis oldhamii (Munro) Keng f. (CHIS, VER).
Deschampsia (4/1/0/0; Pooideae)
Deschampsia cespitosa (L.) P. Beauv. (BC, COAH).
Deschampsia danthonioides (Trin.) Munro (BC, CHIH).
Deschampsia elongata (Hook.) Munro (BC, CHIH, CDM, HGO, JAL, MÉX, MICH, MOR, VER).
*Deschampsia liebmanniana (E. Fourn.) Hitchc. (CDM, JAL, MÉX, MICH, PUE, VER).
Dichanthelium (16/1/0/0; Panicoideae)
Dichanthelium aciculare (Desv. ex Poir.) Gould & C.A. Clark
Dichanthelium aciculare (Desv. ex Poir.) Gould & C.A. Clark var. aciculare (CHIS, NL, OAX, TAM, VER).
Dichanthelium aciculare var. ramosum (Griseb.) Davidse (CAM, CHIS, TAB).
Dichanthelium acuminatum (Sw.) Gould & C.A. Clark
Dichanthelium acuminatum (Sw.) Gould & C.A. Clark var. acuminatum (CAM, CHIS, COAH, GRO, NL, OAX, PUE, SLP, TAB, TAM, VER).
Dichanthelium acuminatum var. lindheimeri (Nash) Gould & C.A. Clark (COAH, NL, PUE, TAM, VER).
Dichanthelium acuminatum var. longiligulatum (Nash) Gould & C.A. Clark (CHIS, TAB).
Dichanthelium commutatum (Schult.) Gould (CHIS, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, TAM, VER).
Dichanthelium dichotomum (L.) Gould
Dichanthelium dichotomum (L.) Gould var. dichotomum (CHIS, GRO, HGO, OAX, PUE, QROO, SLP, VER).
Dichanthelium ensifolium (Baldwin ex Elliott) Gould
Dichanthelium ensifolium (Baldwin ex Elliott) Gould var. ensifolium (CHIS, HGO, VER).
Dichanthelium laxiflorum (Lam.) Gould (CHIS, HGO, MÉX, NL, OAX, PUE, QRO, SLP, TAM, VER).
*Dichanthelium macrospermum Gould (QRO, SLP).
Dichanthelium nodatum (Hitchc. & Chase) Gould (COAH, TAM).
Dichanthelium oligosanthes (Schult.) Gould (CHIH, COAH, NL, SON, TAM, VER).
Dichanthelium ovale (Elliott) Gould & C.A. Clark (CHIS, MÉX, PUE, SLP, TAM, VER).
Dichanthelium pedicellatum (Vasey) Gould (COAH, HGO, NL, OAX, TAM).
Dichanthelium portoricense (Desv. ex Ham.) B.F. Hansen & Wunderlin (VER).
Dichanthelium sphaerocarpon (Elliott) Gould
Dichanthelium sphaerocarpon (Elliott) Gould var. sphaerocarpon (CHIH, CHIS, DGO, GRO, JAL, MICH, PUE, QROO, VER, YUC, ZAC).
Dichanthelium strigosum (Muhl. ex Elliot) Freckman
Dichanthelium strigosum (Muhl. ex Elliot) Freckman var. strigosum (CAM, CHIS, OAX, VER).
Dichanthelium umbonulatum (Swallen) Davidse (OAX).
Dichanthelium viscidellum (Scribn.) Gould (CAMS, CHIS, HGO, MÉX, OAX, PUE, QROO, VER).
Dichanthium (3/0/0/3; Panicoideae)
+Dichanthium annulatum (Forssk.) Stapf (AGS, CAM, CHIH, COAH, JAL, MOR, NL, OAX, QROO, SLP, TAM, YUC).
+Dichanthium aristatum (Poir.) C.E. Hubb. (CAM, NAY, NL, QROO, SLP, TAM).
+Dichanthium sericeum (R. Br.) A. Camus (CAM, SON, TAM).
Digitaria (31/4/1/6; Panicoideae)
+Digitaria abyssinica (Hochst. ex A. Rich.) Stapf (VER).
Digitaria arenicola (Swallen) Beetle (TAM).
Digitaria argillacea (Hitchc. & Chase) Fernald (CHIS, COL, DGO, GTO, JAL, MÉX, MICH, MOR, NAY, OAX, SON).
Digitaria badia (Scribn. & Merr.) Fernald (CHIS, CDM, GTO, HGO, JAL, MÉX, MICH, OAX, QRO, TLX, ZAC).
Digitaria bakeri (Nash) Fernald (CHIS, VER).
+Digitaria bicornis (Lam.) Roem. & Schult. (BCS, CAM, CHIH, CHIS, COL, CDM, GRO, HGO, JAL, MÉX, MOR, NAY, NL, OAX, PUE, QROO, SIN, SON, TAB, TAM, VER, YUC).
*Digitaria breedlovei R.W. Pohl & Davidse (CHIS, DGO).
Digitaria californica (Benth.) Henrard (AGS, BC, BCS, CHIH, COAH, DGO, GTO, HGO, JAL, NL, PUE, QRO, SLP, SIN, SON, TAM, ZAC).
Digitaria ciliaris (Retz.) Koeler (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP SIN, SON, TAB, TAM, VER, YUC).
Digitaria curtigluma Hitchc. (CHIS, CDM, GTO, JAL, MÉX, MICH, OAX, PUE).
+Digitaria eriantha Steud. (OAX, TAM, VER, ZAC).
Digitaria filiformis (L.) Koeler
Digitaria filiformis (L.) Koeler var. filiformis (CHIH, CHIS, COAH, CDM, DGO, GTO, JAL, MÉX, MICH, NAY, OAX, SON, VER, ZAC).
Digitaria filiformis var. laeviglumis (OAX).
Digitaria hitchcockii (Chase) Stuck. (COAH, NL, OAX, QRO, SLP, TAM).
Digitaria horizontalis Willd. (CHIS, COAH, COL, GRO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, VER, YUC).
Digitaria insularis (L.) Mez ex Ekman (AGS, CAM, CHIH, CHIS, COAH, COL, DGO, GTO, GRO, HGO, JAL, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SON, TAB, TAM, VER, YUC).
Digitaria leucites (Trin.) Henrard (CHIS, CDM, DGO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, SLP, TAB, TLX, VER).
Digitaria leucocoma (Nash) Urb. (CHIS, MÉX, VER).
*Digitaria michoacanensis Sánchez-Ken (MÉX, MICH).
+Digitaria milanjiana (Rendle) Stapf (COL, HGO, JAL, MOR, PUE, QRO, TAB, TAM, VER).
Digitaria nuda Schumach. (CHIS, COL, GRO, GTO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, SLP, SIN, VER, YUC).
Digitaria obtusa Swallen (CHIS, VER).
**Digitaria paniculata Soderstr. ex McVaugh (JAL).
Digitaria patens (Swallen) Henrard (COAH, NL, SON).
Digitaria pubiflora (Vasey) Wipff (CHIH, COAH, DGO, GTO, JAL, NL, SLP, SON, TAM, VER, ZAC).
+Digitaria sanguinalis (L.) Scop. (AGS, BCS, CHIH, DGO, JAL, MICH, MOR, NL, QRO, SLP, SON, TAB, TAM, VER, ZAC).
Digitaria sellowii (Müll. Hal.) Henrard (CHIS, HGO, NL, OAX, PUE, QRO, QROO, SLP, TAB, TAM, VER, YUC).
*Digitaria setigera Roth, in Roem. & Schult. (CAM, CHIS, OAX, VER).
*Digitaria ternata (A. Rich.) Stapf (AGS, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, ZAC).
Digitaria texana Hitchc. (VER).
+Digitaria velutina (Forssk.) P. Beauv. (CDM, MOR, OAX, PUE).
Digitaria violascens Link (CHIS, CDM, NL, VER).
Dinebra (6/1/0/0; Chloridoideae)
*Dinebra aquatica (Scribn. & Merr.) P.M. Peterson & N. Snow (GRO, JAL, MICH, MOR, NAY, SIN, ZAC).
Dinebra nealleyi (Vasey) P.M. Peterson & N. Snow (CAM, TAB, TAM, VER, YUC).
Dinebra panicea (Retz.) P.M. Peterson & N. Snow
Dinebra panicea subsp. brachiata (Steud.) P.M. Peterson & N. Snow (BC, CAM, CHIH, COAH, DGO, MICH, MOR, NL, PUE, QROO, SON, TAB, TAM, VER, ZAC).
*Dinebra panicea subsp. mucronata (Steud.) P.M. Peterson & N. Snow (BC, CHIH, CHIS, COAH, DGO, MICH, MOR, NAY, PUE, QRO, SIN, SON, TAB, TAM, VER, YUC).
Dinebra panicoides (J. Presl) P.M. Peterson & N. Snow (BC, BCS, CHIH, COL, GRO, JAL, MICH, NAY OAX, SIN, SON, TAB).
Dinebra scabra (Nees) P.M. Peterson & N. Snow (CHIH, CHIS, MICH, OAX, QROO, SIN, SON, TAB, VER, YUC).
Dinebra viscida (Scribn.) P.M. Peterson & N. Snow (BC, BCS, CHIH, SIN, SON).
Diplachne (1/0/0/0; Chloridoideae)
Diplachne fusca (L.) P. Beauv ex Roem. & Schult.
Diplachne fusca subsp. fascicularis (Lam.) P.M. Peterson & N. Snow (CAM, CHIH, COAH, CDM, DGO, GTO, HGO, MÉX, MICH, MOR, NL, QRO, QROO, SLP, SIN, SON, YUC, ZAC).
Diplachne fusca subsp. uninervia (J. Presl) P.M. Peterson & N. Snow (BCS, CHIH, CHIS, DGO, GTO, GRO, JAL, NAY, OAX, PUE, SLP, SIN, SON, TAM, VER, ZAC).
Disakisperma (1/0/0/0; Chloridoideae)
Disakisperma dubium (Kunth) P.M. Peterson & N. Snow (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, TLX, VER, ZAC).
Distichlis (5/2/1/0; Chloridoideae)
**Distichlis bajaensis H.L. Bell (BC).
*Distichlis eludens (Soderstr. & H.F. Decker) H.L. Bell & Columbus (DGO, SLP, ZAC).
Distichlis littoralis (Engelm.) H.L. Bell & Columbus (BC, BCS, CAM, CHIH, CHIS, COAH, MICH, NAY, NL, OAX, SIN, SON, TAM, YUC).
*Distichlis palmeri (Vasey) Fassett (BC, SON).
Distichlis spicata (L.) Greene
*Distichlis spicata var. mexicana Beetle (CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, PUE, SLP, TLX).
Distichlis spicata (L.) Greene var. spicata (CAM, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QROO, SLP, SIN, TAB, TAM, TLX, VER, YUC).
Distichlis spicata subsp. stricta (Torr.) Thorne (DGO).
Echinochloa (10/1/0/0; Panicoideae)
Echinochloa colona (L.) Link (BC, BCS, CAM, CHIH, CHIS, DGO, MÉX, OAX, QROO, TAB, VER, YUC, ZAC).
Echinochloa crus-galli (L.) P. Beauv.
Echinochloa crus-galli (L.) P. Beauv. var. crus-galli (AGS, BC, BCS, CHIH, COAH, COL, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, SLP, SIN, SON, TAB, TAM, VER, ZAC).
Echinochloa crus-galli var. mitis (Pursh) Peterm. (CDM, MÉX, MOR, SON).
Echinochloa crus-galli var. zelayensis (Kunth) Hitchc. (AGS, BC, CHIH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, PUE, SON, TAM, ZAC).
Echinochloa crus-pavonis (Kunth) Schult.
Echinochloa crus-pavonis (Kunth) Schult. var. crus-pavonis (BCS, CHIH, CHIS, COAH, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN TAB, VER).
Echinochloa crus-pavonis var. macera (Wiegand) Gould (TAM).
Echinochloa holciformis (Kunth) Chase (AGS, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, PUE, SLP, VER, ZAC).
*Echinochloa jaliscana McVaugh (AGS, GTO, JAL, MÉX, MICH, MOR, ZAC).
Echinochloa muricata (P. Beauv.) Fernald
Echinochloa muricata var. microstachya Wiegand (CHIH, DGO, SON).
Echinochloa oplismenoides (E. Fourn.) Hitchc. (AGS, CHIH, CDM, DGO, GRO, HGO, JAL, MÉX, MICH, OAX, PUE, SON, TAB, TLX, ZAC).
Echinochloa polystachya (Kunth) Hitchc.
Echinochloa polystachya (Kunth) Hitchc. var. polystachya (AGS, CAM, CHIH, CHIS, CDM, DGO, JAL, MICH, OAX, PUE, SON, TAB, TAM, VER, YUC, ZAC).
Echinochloa pyramidalis (Lam.) Hitchc. & Chase (CAM, CHIS, GRO, NAY, OAX, PUE, TAB, VER, YUC).
Echinochloa walteri (Pursh) A. Heller (CAM, CHIH, COAH, MICH, SLP, TAB, VER, YUC).
Echinolaena (2/0/0/0; Panicoideae)
Echinolaena gracilis Swallen (CHIS, TAB).
Echinolaena standleyi (Hitchc.) Stieber (CHIS).
Eleusine (3/0/0/3; Chloridoideae)
+Eleusine indica (L.) Gaertn. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, TLX, VER, YUC, ZAC).
+Eleusine tristachya (Lam.) Lam. (MÉX).
Elionurus (3/0/0/0; Panicoideae)
Elionurus barbiculmis Hack. (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, JAL, MÉX, NAY, PUE, SLP, SIN, SON, TLX, ZAC).
Elionurus ciliaris Kunth (OAX).
Elionurus muticus (Spreng.) Kuntze (JAL).
Elymus (9/2/0/0; Pooideae)
Elymus arizonicus (Scribn. & J.G. Sm.) Gould (CHIH, DGO, ZAC).
Elymus canadensis L.
Elymus canadensis L. var. canadensis (CHIH, DGO).
Elymus elymoides (Raf.) Swezey
Elymus elymoides subsp. brevifolius (J.G. Sm.) Barkworth (CHIH, DGO, ZAC).
Elymus glaucus Buckley (BC).
*Elymus pilosus (J. Presl) Á. Löve (GRO, MICH).
*Elymus pringlei Scribn. & Merr. (AGS, COAH, HGO, MÉX, MICH, NL, PUE, QRO, SLP, VER).
Elymus repens (L.) Gould
+Elymus repens (L.) Gould subsp. repens (CHIH, DGO, ZAC).
Elymus riparius Wiegand (DGO).
Elymus trachycaulus (Link) Gould ex Shinners
Elymus trachycaulus subsp. subsecundus (Link) Á. Löve & D. Löve (BC).
Elymus trachycaulus (Link) Gould ex Shinners subsp. trachycaulus (CHIH, DGO).
Enneapogon (1/0/0/1; Chloridoideae)
+Enneapogon desvauxii P. Beauv. (AGS, BC, BCS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, NL, OAX, PUE, QRO, SLP, SON, ZAC).
Eragrostis (45/3/0/12; Chloridoideae)
Eragrostis acutiflora (Kunth) Nees (CHIS, COL, GRO, JAL, MICH, NAY, OAX, TAB).
Eragrostis bahiensis Schrad. ex Schult. (CHIS, GTO, JAL, NAY, OAX, TAB, VER).
+Eragrostis barrelieri Daveau (CHIH, CHIS, COAH, DGO, HGO, NL, OAX, PUE, QRO, SLP, TAB, TAM, ZAC).
Eragrostis capillaris (L.) Nees (TAM).
+Eragrostis cilianensis (All.) Vignolo ex Janch. (AGS, BC, BCS, CAM., CHIH, CHIS, COAH, DGO, GTO, GRO, HGO, JAL, MÉX, MOR, NL, OAX, PUE, SLP, SIN, SON, TAM, VER, ZAC).
+Eragrostis ciliaris (L.) R.Br.
+Eragrostis ciliaris (L.) R.Br. var. ciliaris (AGS, BCS, CAM, CHIH, CHIS, COL, CDM, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, VER, YUC).
+Eragrostis ciliaris var. laxa Kuntze (CAMS, QROO, TAM, YUC).
Eragrostis contrerasii R.W. Pohl (CAM, QROO, TAB, VER, YUC).
Eragrostis curtipedicellata Buckley (COAH, NL).
+Eragrostis curvula (Schrad.) Nees (CHIH, COAH, CDM, DGO, GTO, MICH, NL, QRO, SON, TLX, ZAC).
+Eragrostis echinochloidea Stapf. (CHIH, SLP).
Eragrostis elliottii S. Watson (CAM, CHIS, JAL, MICH, NL, OAX, QROO, SIN, TAB, TAM, VER, YUC).
Eragrostis erosa Scribn. ex Beal (CHIH, COAH, DGO, NL, SON, TAM, ZAC).
Eragrostis glandulosa L.H. Harv. (CHIH, CHIS, CDM, DGO, GRO, JAL, MÉX, MOR, OAX, ZAC).
Eragrostis guatemalensis Witherspoon (CHIS, MÉX, PUE).
Eragrostis hirsuta (Michx.) Nees (CHIS, NL, OAX, TAB, TAM, VER).
Eragrostis hirta E. Fourn.
Eragrostis hirta E. Fourn. var. hirta (CHIS, JAL, MÉX, OAX, SLP, TAM, ZAC).
*Eragrostis hirta var. longiramea (Swallen) Witherspoon (NL, OAX, SLP, TAM).
Eragrostis hondurensis R.W. Pohl (CHIS, OAX).
Eragrostis hypnoides (Lam.) Britton, Sterns & Poggenb. (BC, BCS, CAM, CHIS, GTO, GRO, OAX, SLP, SON, TAB, TAM, VER).
Eragrostis intermedia Hitchc.
*Eragrostis intermedia var. appressa Witherspoon (JAL, ZAC).
Eragrostis intermedia Hitchc. var. intermedia (AGS, BC, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER).
*Eragrostis intermedia var. oreophila (L.H. Harv.) Witherspoon (BC, BCS, CHIH, HGO, MICH, NL).
Eragrostis japonica (Thunb.) Trin. (OAX).
+Eragrostis lehmanniana Nees (CHIH, COAH, DGO, NL, SON).
Eragrostis lugens Nees (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
Eragrostis maypurensis (Kunth) Steud. (BC, CHIS, COL, CDM, DGO, GRO, JAL, MÉX, MICH, NAY, OAX, PUE, SIN, TAB, VER, YUC).
Eragrostis mexicana (Hornem.) Link
Eragrostis mexicana (Hornem.) Link subsp. mexicana (AGS, BC, BCS, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MEX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, TLX, VER, ZAC).
Eragrostis mexicana subsp. virescens (J. Presl) S.D. Koch & Sánchez Vega (CHIH).
+Eragrostis minor Host (MÉX, PUE, VER).
Eragrostis palmeri S. Watson (BC, CHIH, COAH, DGO, NL, OAX, SON, TAM, VER, ZAC).
Eragrostis pectinacea (Michx.) Nees
Eragrostis pectinacea var. miserrima (E. Fourn.) Reeder (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, TLX, VER, YUC, ZAC).
Eragrostis pectinacea (Michx.) Nees var. pectinacea (AGS, BC, BC, SUR, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, TLX, VER, YUC, ZAC).
+Eragrostis pilosa (L.) P. Beauv. (BC, BCS, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAB, TAM, VER).
*Eragrostis plumbea Scribn. ex Beal (AGS, COL, CDM, GTO, JAL, MÉX, MICH, PUE, QRO, SLP, VER, ZAC).
Eragrostis polytricha Nees (CHIS, GTO, OAX, PUE, VER).
*Eragrostis pringlei Mattei (CHIH, DGO, GTO, JAL, MICH, ZAC).
Eragrostis prolifera (Sw.) Steud. (CAM, CHIS, COL, GRO, JAL, NAY, OAX, QROO, SIN, TAB, VER, YUC).
Eragrostis reptans (Michx.) Nees (BC, BCS, COAH, NL, TAB, TAM, VER).
Eragrostis rufescens Schrad. ex Schult.
Eragrostis rufescens var. mesoamericana Davidse (CHIS, OAX, TAB, VER).
Eragrostis secundiflora J. Presl
Eragrostis secundiflora subsp. oxylepis (Torr.) S.D. Koch (TAM, VER).
Eragrostis secundiflora J. Presl subsp. secundiflora (GRO, OAX).
Eragrostis sessilispica Buckley (CHIH, TAM).
Eragrostis silveana Swallen (COAH, NL, OAX, SLP, TAM).
Eragrostis simpliciflora (J. Presl) Steud. (CHIS).
+Eragrostis spectabilis (Pursh) Steud. (CHIH, COAH, NL, PUE, SLP, TAM).
Eragrostis spicata Vasey (BCS, SON, TAM).
*Eragrostis superba Peyr. (AGS, CHIH, COAH, GTO, MICH, NL, SLP, SON, TAM)..
Eragrostis swallenii Hitchc. (CHIS, GTO, JAL, MÉX, OAX, PUE, QRO, SLP, TAM, VER).
+Eragrostis tenuifolia (A. Rich.) Hochst. ex Steud. (CHIS, OAX, VER, YUC).
+Eragrostis unioloides (Retz.) Nees ex Steud. (CHIS, TAB).
+Eragrostis viscosa (Retz.) Trin. (BC, BCS, CHIS, CDM, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, SIN, TAB, VER, YUC).
Eremochloa (1/0/0/1; Panicoideae)
+Eremochloa ophiuroides (Munro) Hack. (BC).
Eriochloa (8/0/0/0; Panicoideae)
Eriochloa acuminata (J. Presl) Kunth
Eriochloa acuminata (J. Presl) Kunth var. acuminata (AGS, BCS, CHIH, COAH, COL, DGO, GTO, GRO, JAL, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON).
Eriochloa acuminata var. minor (Vasey) R.B. Shaw (CHIH, COAH, DGO, JAL, MÉX, MICH, NL, QRO, SLP, SON).
Eriochloa aristata Vasey
Eriochloa aristata Vasey var. aristata (BC, CHIH, CHIS, COL, DGO, GRO, JAL, MOR, NAY, OAX, PUE, SIN, SON, VER, YUC).
Eriochloa aristata var. boxiana (Hitchc.) R.B. Shaw (BC, CAM, CHIH, CHIS, COL, DGO, GTO, GRO, JAL, MOR, NAY, OAX, PUE, SIN, SON, VER, YUC).
Eriochloa contracta Hitchc. (CHIH, COAH, DGO, JAL, NAY, NL, OAX, SIN, SON, TAM).
Eriochloa lemmonii Vasey & Scribn. (CHIH, COAH, COL, DGO, JAL, MÉX, MOR, NAY, SIN, SON).
Eriochloa nelsonii Scribn. & J.G. Sm.
Eriochloa nelsonii Scribn. & J.G. Sm. var. nelsonii (CAM, CHIH, CHIS, COL, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SON).
*Eriochloa nelsonii var. papillosa R.B. Shaw (GRO, JAL, MICH, NAY, PUE).
Eriochloa polystachya Kunth (CHIS).
Eriochloa punctata (L.) Desv. ex Ham. (CHIH, CHIS, COAH, COL, CDM, GTO, GRO, HGO, JAL, MÉX, MOR, NL, OAX, SLP, TAB, TAM, VER, YUC, ZAC).
Eriochloa sericea (Scheele) Munro ex Vasey (COAH, TAM).
Eriochrysis (1/0/0/0; Panicoideae)
Eriochrysis cayennensis P. Beauv. (CHIS, OAX, TAB, VER).
Erioneuron (3/0/0/0; Chloridoideae)
Erioneuron avenaceum (Kunth) Tateoka
Erioneuron avenaceum (Kunth) Tateoka var. avenaceum (AGS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, NL, OAX, PUE, QRO, SLP, TAM, TLX, ZAC).
Erioneuron nealleyi (Vasey) Tateoka (AGS, CHIH, COAH, DGO, GTO, HGO, NL, QRO, SLP, TAM, ZAC).
Erioneuron pilosum (Buckley) Nash
Erioneuron pilosum (Buckley) Nash var. pilosum (AGS, CHIH, COAH, NL, OAX, PUE, QRO, SLP, TAM, ZAC).
Euclasta (1/0/0/1; Panicoideae)
+Euclasta condylotricha (Hochst. ex Steud.) Stapf (CHIS, COL, GTO, GRO, JAL, MÉX, MICH, NAY, OAX, SIN, VER).
Eustachys (1/0/0/0; Chloridoideae)
Eustachys petraea (Sw.) Desv. (CAM, NL, QROO, TAB, TAM, VER, YUC).
Festuca (30/11/7/0; Pooideae)
**Festuca aequipaleata E. Fourn. (VER).
Festuca aguana E.B. Alexeev (CHIS, GRO).
Festuca amplissima Rupr. (BC, CHIH, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SIN, SON, TAB, TAM, TLX, VER).
Festuca arizonica Vasey (COAH, DGO, NL, ZAC).
*Festuca asperella E.B. Alexeev (CDM, MÉX).
**Festuca bajacaliforniana Gonz.-Led. & S.D. Koch (BC).
**Festuca bidenticulata E.B. Alexeev (VER).
Festuca breviglumis Swallen (AGS, CHIS, DGO, GTO, JAL, MICH, MOR, OAX).
**Festuca callosa (Piper) St.-Yves (PUE).
**Festuca coahuilana Gonz.-Led. & S.D. Koch (COAH).
*Festuca diclina Darbysh. (CHIH, CHIS).
Festuca hephaestophila Nees ex Steud. (CHIS, CDM, MÉX, NL, PUE, TAM, TLX, VER).
*Festuca hintoniana E.B. Alexeev (COAH, NL, TAM).
*Festuca jaliscana E.B. Alexeev (COL, JAL).
Festuca ligulata Swallen (COAH).
*Festuca livida (Kunth) Willd. ex Spreng. (CHIS, CDM, MÉX, PUE, VER).
*Festuca lugens (E. Fourn.) Hitchc. ex Hern.-Xol. (CHIH, CHIS, CDM, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, TAM, TLX, VER).
*Festuca orizabensis E.B. Alexeev (CHIS, CDM, DGO, JAL, MÉX, MICH, MOR, PUE, VER).
*Festuca pinetorum Swallen (COAH, NL, TAM).
*Festuca pringlei St.-Yves (AGS, CHIH, DGO, JAL).
*Festuca roblensis Gonz.-Led. (GTO, GRO, ZAC).
Festuca rosei Piper (AGS, CHIS, CDM, DGO, GRO, JAL, MÉX, MICH, MOR, PUE, QRO, SLP, TAM, TLX, VER, ZAC).
Festuca rubra L. (CHIHG, COAH, CDM, DGO, MÉX, NL, PUE, QRO, TAM, VER).
**Festuca rzedowskiana E.B. Alexeev (MÉX).
Festuca subulata Trin. (CHIS).
**Festuca tancitaroensis Gonz.-Led. & S.D. Koch (MICH).
Festuca thurberi Vasey (COAH, NL, TAM).
Festuca tolucensis Kunth (CHIH, CHIS, CDM, DGO, JAL, MÉX, MICH, MOR, PUE, SLP, TLX, VER).
*Festuca valdesii Gonz.-Led. & S.D. Koch (COAH, NL, TAM).
Festuca willdenowiana Schult. & Schult. f. (CHIS, CDM, GRO, JAL, MÉX, OAX, PUE, VER).
Gastridium (1/0/0/1; Pooideae)
+Gastridium ventricosum (Gouan) Schinz & Thell. (BC).
Glyceria (4/0/0/1; Pooideae)
Glyceria borealis (Nash) Batch. (CHIH).
+Glyceria fluitans (L.) R. Br. (DGO, GTO, HGO, MÉX, MICH, QRO, SLP).
Glyceria septentrionalis Hitchc. (MÉX, QRO, SLP).
Glyceria striata (Lam.) Hitchc.
Glyceria striata var. mexicana Kelso (CHIS, CDM, HGO, MÉX, MOR, OAX).
Glyceria striata (Lam.) Hitchc. var. striata (CHIH, DGO).
Gouinia (5/2/1/0; Chloridoideae)
**Gouinia isabelensis J.J. Ortíz (NAY).
Gouinia latifolia (Griseb.) Vasey
Gouinia latifolia var. guatemalensis (Hack.) J.J. Ortíz (CAM, OAX, QRO, QROO, YUC).
*Gouinia mexicana (Scribn.) Vasey (QRO, SLP).
*Gouinia papillosa Swallen (QROO, TAM, YUC).
Gouinia virgata (J. Presl) Scribn.
*Gouinia virgata var. robusta J.J. Ortíz (GRO, JAL, MICH, MOR, ZAC).
Gouinia virgata (J. Presl) Scribn. var. virgata (CAM, CHIS, COL, DGO, GRO, JAL, MICH, NAY, OAX, QRO, QROO, SLP, SIN, TAM, VER, YUC, ZAC).
Guadua (8/2/1/1; Bambusoideae)
Guadua aculeata Rupr. ex E. Fourn. (CHIS, PUE, VER).
Guadua amplexifolia J. Presl (CAM, CHIS, PUE, QROO, TAB, VER).
+Guadua angustifolia Kunth (TAB, VER).
*Guadua inermis Rupr. ex E. Fourn. (CAM, CHIS, OAX, TAB, VER).
Guadua longifolia (E. Fourn.) R.W. Pohl (CAM, CHIS, TAB, VER).
Guadua paniculata Munro (CHIS, GRO, JAL, NAY, OX, SLP).
**Guadua tuxtlensis Londoño & Ruíz-Sánchez (VER).
*Guadua velutina Londoño & L.G. Clark (HGO, PUE, SLP, TAB, VER).
Gymnopogon (1/0/0/0; Chloridoideae)
Gymnopogon spicatus (Spreng.) Kuntze
Gymnopogon spicatus fo. spicatus (VER).
Gynerium (1/0/0/1; Panicoideae)
+Gynerium sagittatum (Aubl.) P. Beauv. (CAM, CHIS, OAX, PUE, SLP, TAB, VER).
Hainardia (1/0/0/1; Pooideae)
+Hainardia cylindrica (Willd.) Greuter (BC).
Hemarthria (1/0/0/0; Panicoideae)
Hemarthria altissima (Poir.) Stapf & C.E. Hubb. (CAM, CHIS, COAH, GRO, MÉX, MOR, NL, PUE, SLP, TAB, TAM, VER, YUC).
Hesperostipa (3/0/1/0; Pooideae)
Hesperostipa comata (Trin. & Rupr.) Barkworth (BC).
Hesperostipa neomexicana (Thurb.) Barkworth (CHIH, DGO).
**Hesperostipa saxicola (Hitchc.) Valdés-Reyna & Barkworth (PUE).
Heteropogon (2/0/0/0; Panicoideae)
Heteropogon contortus (L.) P. Beauv. ex Roem. & Schult. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, VER, YUC, ZAC).
Heteropogon melanocarpus (Elliott) Benth. (AGS, BC, BCS, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR,. NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, VER, ZAC).
Hilaria (9/2/2/0; Chloridoideae)
**Hilaria annua Reeder & C. Reeder (COL).
Hilaria belangeri (Steud.) Nash
Hilaria belangeri (Steud.) Nash var. belangeri (AGS, BC, BCS, CHIH, COAH, GTO, GRO, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SON, TAM.
Hilaria belangeri var. longifolia (Vasey) Hitchc. (BCS, SON).
Hilaria cenchroides Kunth (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
*Hilaria ciliata (Scribn.) Nash (BC, BCS, CHIH, COL, GTO, GRO, JAL, MICH, NAY, OAX, QRO, SLP, SON, TAM, VER).
*Hilaria hintonii Sohns (GRO, MÉX, MICH, MOR, QRO).
Hilaria mutica (Buckley) Benth. (BCS, CHIH, COAH, DGO, NL, SON, ZAC).
Hilaria rigida (Thurb.) Benth. ex Scribn. (BC, CHIH, SON).
**Hilaria semplei Sohns (MICH).
Hilaria swallenii Cory (CHIH, COAH, DGO, NL, SLP, ZAC).
Holcus (1/0/0/1; Pooideae)
+Holcus lanatus L. (BC, CHIS, CHIH, MÉX, MICH, PUE, VER).
Homolepis (2/0/0/0; Panicoideae)
Homolepis aturensis (Kunt) Chase (CHIS, OAX, PUE, TAB, VER).
Homolepis glutinosa (Sw.) Zuloaga & Soderstr. (CHIS, HGO, OAX, PUE, TAM, VER).
Hopia (1/0/0/0; Panicoideae)
Hopia obtusa (Kunth) Zuloaga and Morrone (AGS, CHIH, COAH, DGO, GTO, HGO, JAL, MÉX, MICH, NL, PUE, QRO, SLP, SON, ZAC).
Hordeum (7/0/0/1; Pooideae)
Hordeum arizonicum Covas (BC, DGO, SON).
Hordeum brachyantherum Nevski (BC).
Hordeum depressum (Scribn. & J.G. Sm.) Rydb. (BC).
Hordeum jubatum L. (AGS, BC, COAH, CDM, DGO, HGO, JAL, MÉX, PUE, QRO, SLP, ZAC).
Hordeum murinum L.
+Hordeum murinum subsp. glaucum (Steud.) Tzvelev (CHIH).
Hordeum pusillum Nutt. (BC).
+Hordeum vulgare L. (AGS, BC, CHIH, CHIS, COAH, CDM, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, SLP, SON, TAB, TAM, VER, ZAC).
Hymenachne (1/0/0/0; Panicoideae)
Hymenachne amplexicaulis (Rudge) Nees (CAMS, CHIS, COL, GTO, GRO, JAL, MICH, NAY, OAX, QROO, SIN, TAB, TAM, VER, YUC).
Hyparrhenia (3/0/0/1; Panicoideae)
Hyparrhenia bracteata (Humb. & Bonpl. ex Willd.) Stapf (CHIS, OAX, VER).
+Hyparrhenia hirta (L.) Stapf (CHIS, NL, OAX, SLP, YUC).
Hyparrhenia rufa (Nees) Stapf
Hyparrhenia rufa (Nees) Stapf var. rufa (CAM, CHIS, COL, GRO, JAL, MÉX, MICH, MOR, NAY, QROO, SIN, TAB, TAM, VER, YUC).
Hyperthelia (1/0/0/01; Panicoideae)
+Hyperthelia dissoluta (Nees ex Steud.) Clayton (CHIS, COL, GRO, JAL, MÉX, MICH, NAY, SIN, VER, YUC).
Ichnanthus (6/0/0/0: Panicoideae)
Ichnanthus calvescens (Nees ex Trin.) Döll
Ichnanthus calvescens var. scabrior Döll (TAB).
Ichnanthus lanceolatus Scribn. & J.G. Sm. (CAM, CHIS, QROO, TAB, YUC).
Ichnanthus nemoralis (Schrad.) Hitchc. & Chase (QROO, YUC).
Ichnanthus nemorosus (Sw.) Döll (CAM, CHIS, GRO, HGO, JAL, OAX, PUE, QRO, SLP, VER).
Ichnanthus pallens (Sw.) Munro ex Benth.
Ichnanthus pallens var. major (Nees) Stieber (VER).
Ichnanthus pallens (Sw.) Munro ex Benth. var. pallens (CAM, CHIS, HGO, OAX, PUE, QROO, SLP, TAB, VER).
Ichnanthus tenuis (J. Presl & C. Presl) Hitchc. & Chase (CHIS, OAX, PUE, QROO, TAB, VER, YUC).
Imperata (3/0/0/0; Panicoideae)
Imperata brasiliensis Trin. (CAM, CHIS, JAL, OAX, QROO, TAB, VER, YUC).
Imperata contracta (Kunth) Hitchc. (CHIS, TAB, VER).
Imperata cylindrica (L.) P. Beauv. (CHIS).
Isachne (3/0/0/0; Micrairoideae)
Isachne arundinacea (Sw.) Griseb. (CHIS, GRO, HGO, OAX, PUE, VER).
Isachne polygonoides (Lam.) Döll. (CHIS, GRO).
Isachne pubescens Swallen (CHIS, VER).
Ischaemum (2/0/0/1; Panicoideae)
Ischaemum latifolium (Spreng.) Kunth (CAM, CHIS, OAX, PUE, QROO, VER, YUC).
+Ischaemum rugosum Salisb. (CAM, GRO, JAL, MICH, NAY).
Ixophorus (1/0/0/0; Panicoideae)
Ixophorus unisetus (J. Presl) Schltdl. (AGS, CAM, CHIS, COL, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, SLP, SIN, TAM, VER).
Jarava (2/0/0/0; Pooideae)
Jarava ichu Ruíz & Pav. (COAH, OAX, SLP, VER).
Jarava speciosa (Trin. & Rupr.) Peñailillo (BC, BCS).
Jouvea (2/0/0/0; Chloridoideae)
Jouvea pilosa (J. Presl) Scribn. (BCS, CHIS, COL, GRO, JAL, MICH, NAY, OAX, SIN, SON, TAM, YUC).
Jouvea straminea E. Fourn. (CHIS, GRO, JAL, NAY, OAX, SIN).
Kalinia (1/0/0/0; Chloridoideae)
Kalinia obtusiflora (E. Fourn.) H.L. Bell & Columbus (CHIH, COAH, CDM, GTO, JAL, MÉX, MICH, NL, OAX, SON, VER, ZAC).
Koeleria (2/0/0/0; Pooideae)
Koeleria macrantha (Ledeb.) Schult. (SON).
Koeleria pyramidata (Lam.) P. Beauv. (BC, BCSUR, CHIH, COAH, COL, CDM, DGO, GTO, JAL, MÉX, NL, OAX, SLP, SON, TAM, TLX, VER, ZAC).
Lachnagrostis (1/0/0/0; Pooideae)
Lachnagrostis filiformis (G. Forst.) Trin. (CHIS)
Lamarckia (1/0/0/1; Pooideae)
+Lamarckia aurea (L.) Moench (BC, BCS).
Lasiacis (13/0/0/0; Panicoideae)
Lasiacis divaricata (L.) Hitchc.
Lasiacis divaricata (L.) Hitchc. var. divaricata (BCS, CAM, CHIS, COL, GRO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QROO, SLP, SIN, TAB, TAM, VER, YUC).
Lasiacis divaricata var. leptostachya (Hitchc.) Davidse (CHIS, OAX, TAB, VER).
Lasiacis grisebachii (Nash) Hitchc.
Lasiacis grisebachii (Nash) Hitchc. var. grisebachii (CAM, CHIS, HGO, OAX, PUE, QROO, SLP, TAB, VER, YUC).
Lasiacis linearis Swallen (CHIS).
Lasiacis nigra Davidse (AGS, CHIS, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, TAB, TAM, VER, ZAC).
Lasiacis oaxacensis (Steud.) Hitchc.
Lasiacis oaxacensis var. maxonii (Swallen) Davidse (CHIS).
Lasiacis oaxacensis (Steud.) Hitchc. var. oaxacensis (CHIS, JAL, MÉX, NAY, OAX, TAB, VER).
Lasiacis procerrima (Hack.) Hitchc. (CHIS, COL, DGO, GRO, JAL, MÉX, MICH, NAY, OAX, PUE, SIN, TAB, TAM, VER).
Lasiacis rhizophora (E. Fourn.) Hitchc. (CHIS, GRO, MOR, MICH, OAX, PUE, VER).
Lasiacis rugelii (Griseb.) Hitchc.
Lasiacis rugelii var. pohlii Davidse (CHIS).
Lasiacis rugelii (Griseb.) Hitchc. var. rugelii (CAM, CHIS, OAX, QROO, SLP, TAB, TAM, VER, YUC).
Lasiacis ruscifolia (Kunth) Hitchc. (BC, BCS, CAM, CHIH, CHIS, COL, DGO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, VER, YUC).
Lasiacis scabrior Hitchc. (CHIS, OAX, VER).
Lasiacis sloanei (Griseb.) Hitchc. (CAM, CHIS, OAX, QRO, QROO, SLP, TAB, TAM, VER, YUC).
Lasiacis sorghoidea (Desv. ex Ham.) Hitchc. & Chase (CHIS, JAL, MÉX, OAX, SLP, TAB, VER).
Lasiacis standleyi Hitchc. (CHIS).
Leersia (4/0/0/0; Oryzoideae)
Leersia hexandra Sw. (CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SLP, TAB, TAM, VER, YUC, ZAC).
Leersia ligularis Trin.
Leersia ligularis var. breviligulata (Prod.) Pyrah (CAM, CHIS, HGO, MÉX, NL, OAX, PUE, QRO, SLP, TAB, TAM, VER, YUC).
*Leersia ligularis Trin. var. ligularis (CHIS, PUE, QRO, SLP, TAM, VER).
Leersia monandra Sw. (CAM, CHIS, COAH, NL, OAX, PUE, QRO, SLP, TAB, TAM, VER, YUC).
Leersia oryzoides (L.) Sw. (COAH, NL, SLP, TAM).
Leptochloa (3/0/0/0; Chloridoideae)
Leptochloa crinita (Lag.) P.M. Peterson & N. Snow (BCS, CHIH, COAH, DGO, SLP, SON).
Leptochloa pluriflora (E. Fourn.) P.M. Peterson & N. Snow (CAM, CHIH, COAH, DGO, JAL, MICH, NL, OAX, PUE, SLP, TAM, YUC).
Leptochloa virgata (L.) P. Beauv. (BC, BCS, CAM, CHIH, CHIS, COL, GTO, JAL, MICH, NAY, OAX, PUE, QROO, SLP, SON, TAB, TAM, VER, YUC).
Leymus (2/0/0/0; Pooideae)
Leymus condensatus (J. Presl) Á. Löve (COAH).
Leymus triticoides (Buckley) Pilg. (BC).
Limnodea (1/0/0/0; Pooideae)
Limnodea arkansana (Nutt.) L.H. Dewey (COAH, TAM).
Lithachne (1/0/0/0; Bambusoideae)
Lithachne pauciflora (Sw.) P. Beauv. (CAM, CHIS, JAL, OAX, PUE, QROO, SLP, TAB, TAM, VER, YUC).
Lolium (3/0/0/3; Pooideae)
+Lolium multiflorum Lam. (AGS, BC, CHIH, CHIS, COAH, CDM, DGO, GTO, JAL, MÉX, NL, OAX, PUE, SLP, SON, TLX, VER, ZAC).
+Lolium perenne L. (AGS, BC, CHIH, CHIS, COAH, CDM, DGO, GTO, JAL, MÉX, MICH, NL, OAX, PUE, SON, TAM, VER, ZAC).
+Lolium temulentum L. (AGS, BC, JAL, OAX, PUE, SLP, VER, ZAC).
Luziola (4/0/0/0; Oryzoideae)
Luziola fluitans (Michx.) Terrell & H. Rob.
Luziola fluitans (Michx.) Terrell & H. Rob. var. fluitans (AGS, GTO, HGO, JAL, MÉX).
Luziola gracillima Prod. (GTO, JAL, SIN, SON).
Luziola peruviana Juss. ex J.F. Gmel. (CAM, CHIS, CDM, HGO, JAL, MÉX, MICH, OAX, QRO, TAB, VER).
Luziola subintegra Swallen (CHIS, TAB, VER).
Melica (5/0/0/0; Pooideae)
Melica frutescens Scribn. (BC, BCS).
Melica imperfecta Trin. (BC, BCS).
Melica montezumae Piper (CHIH, COAH, NL).
Melica nitens (Nutt.) Nutt. ex Piper (COAH, NL, TAM).
Melica porteri Scribn. (CHIH, COAH).
Melinis (2/0/0/2; Panicoideae)
+Melinis minutiflora P. Beauv. (CAM, CHIS, COL, GTO, GRO, HGO, JAL, MEX, MICH, MOR, OAX, PUE, QRO, QROO, TAB, TAM, TLX, VER, YUC).
+Melinis repens (Willd.) Zizka (CAM, CHIH, DGO, OAX, QROO, VER, YUC, ZAC).
Merostachys (1/0/1/0; Bambusoideae)
**Merostachys mexicana Ruiz-Sanchez & L.G. Clark (CHIS).
Mesosetum (4/0/0/0; Panicoideae)
Mesosetum blakei Swallen (CHIS, TAB, VER).
Mesosetum filifolium F.T. Hubb. (OAX).
Mesosetum pittieri Hitchc. (CHIS, OAX, VER).
Mesosetum stoloniferum Swallen (CHIS, TAB).
Metcalfia (1/1/0/0; Pooideae)
*Metcalfia mexicana (Scribn.) Conert (CHIS, COAH, HGO, MÉX, NL, OAX, PUE, QRO, SLP, TAM, ZAC).
Microchloa (1/0/0/0; Chloridoideae)
Microchloa kunthii Desv. (AGS, BC, BCS, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN, SON, TLX, VER, ZAC).
Miscanthus (1/0/0/1; Panicoideae)
+Miscanthus sinensis Andersson (TAB, VER).
Mnesithea (4/0/0/1; Panicoideae)
Mnesithea aurita (Steud.) de Koning & Sosef (CHIS, CDM, JAL, MÉX, MICH, NAY, PUE, TAB, VER).
+Mnesithea granularis (L.) de Koning & Sosef (BCS, CAM, CHIH, CHIS, COL, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SIN, SON, TAB, TAM, VER, YUC, ZAC).
Mnesithea ramosa (E. Fourn.) de Koning & Sosef (VER, ZAC).
Mnesithea subgibbosa (Winkl. ex Hack.) de Koning & Sosef (CHIS).
Morronea (6/0/0/0; Panicoideae)
Morronea arundinariae (Trin. ex E. Fourn.) Zuloaga and Scataglini (VER).
Morronea cayoensis (Swallen) Zuloaga and Scataglini (CHIS).
Morronea guatemalensis (Swallen) Zuloaga and Scataglini (CHIS, VER).
Morronea incumbens (Swallen) Zuloaga and Scataglini (CHIS).
Morronea parviglumis (Hack.) Zuloaga and Scataglini (VER).
Morronea trichidiachnis (Döll) Zuloaga and Scataglini (VER).
Muhlenbergia (127/35/16/0; Chloridoideae)
**Muhlenbergia aguascalientensis Y. Herrera & De la Cerda-Lemus (AGS).
*Muhlenbergia alamosae Vasey (AGS, BC, BCS, CHIH, DGO, GTO, JAL, MÉX, MOR, PUE, SIN, SON, ZAC).
Muhlenbergia alopecuroides (Griseb.) P.M. Peterson & Columbus (BC, CHIH, COAH, DGO, SLP, SON).
*Muhlenbergia annua (Vasey) Swallen (CHIH, DGO, SON).
Muhlenbergia appressa C.O. Goodd. (BC, BCS).
Muhlenbergia arenacea (Buckley) Hitchc. (CHIH, COAH, SLP, SON, ZAC).
Muhlenbergia arenicola Buckley (CHIH, COAH, DGO, NAY, NL, SLP, SON, TAM, ZAC).
**Muhlenbergia argentea Vasey (CHIH).
Muhlenbergia arizonica Scribn. (BC, BCS, CHIH, DGO, SIN, SON).
Muhlenbergia arsenei Hitchc. (BC).
Muhlenbergia articulata Scribn. (CHIH, GTO, GRO, HGO, QRO, SLP, SON).
Muhlenbergia asperifolia (Nees & Meyen ex Trin.) Parodi (BC, CHIH, COAH, DGO, JAL, SLP, SON).
Muhlenbergia beyrichiana Kunth (CHIS).
*Muhlenbergia biloba Hitchc. (CHIH, DGO, SON).
**Muhlenbergia brandegeei C. Reeder (BCS).
*Muhlenbergia brevifolia Scribn. ex Beal (DGO, GTO, JAL, NAY).
Muhlenbergia breviligula Hitchc. (CHIS).
Muhlenbergia brevis C.O. Goodd. (CHIH, CDM, DGO, JAL, MÉX, SLP, ZAC).
*Muhlenbergia breviseta Griseb. ex E. Fourn. (GRO, JAL, MÉX, MICH, NAY, VER).
*Muhlenbergia brevivaginata Swallen (AGS, DGO, JAL, NAY, SIN, ZAC).
Muhlenbergia capillaris (Lam.) Trin. (OAX, QROO, VER, YUC).
*Muhlenbergia capillipes (M.E. Jones) P.M. Peterson & Annable (CHIH, SON).
Muhlenbergia cenchroides (Humb. & Bonpl. Ex Willd.) P.M. Peterson (BC, BCS, CHIH, CHIS, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN, SON, TLX, VER, ZAC).
Muhlenbergia ciliata (Kunth) Trin. (AGS, BC, BCS, CHIH, CHIS, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SIN, SON, VER, ZAC).
Muhlenbergia crispiseta Hitchc. (AGS, CHIH, DGO, GTO, JAL, MÉX, NAY, SLP, SIN, SON, ZAC).
**Muhlenbergia cualensis Y. Herrera & P.M. Peterson (JAL).
**Muhlenbergia decumbens Swallen (CHIH).
Muhlenbergia depauperata Scribn. (AGS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, NL, OAX, PUE, QRO, SLP, VER, ZAC).
Muhlenbergia distichophylla (J. Presl) Kunth (CHIH, CHIS, COL, GRO, JAL, MÉX, MICH, OAX, PUE, TAM).
Muhlenbergia diversiglumis Trin. (CHIH, CHIS, DGO, HGO, JAL, MÉX, MICH, MOR, NAY, SIN, SON, ZAC).
Muhlenbergia dubia E. Fourn. (AGS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, NL, OAX, PUE, QRO, SLP, TAM, TLX, VER, ZAC).
Muhlenbergia dumosa Scribn. ex Vasey (BC, BCS, CHIH, DGO, JAL, MÉX, MICH, OAX, PUE, QRO, SON, VER, ZAC).
*Muhlenbergia durangensis Y. Herrera (CHIH, DGO, ZAC).
Muhlenbergia elongata Scribn. ex Beal (CHIH, HGO, SON).
Muhlenbergia eludens C. Reeder (CHIH, DGO, SIN, SON).
Muhlenbergia emersleyi Vasey (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, TLX, VER, ZAC).
*Muhlenbergia eriophylla Swallen (AGS, DGO, GTO, MÉX, MICH, ZAC).
Muhlenbergia filiculmis Vasey (DGO).
Muhlenbergia filiformis (Thurb. ex S. Watson) Rydb. (AGS, BC, DGO, OAX).
*Muhlenbergia flavida Vasey (CHIH, DGO, HGO, JAL, MICH, MOR, NAY, SIN, SON).
*Muhlenbergia flaviseta Scribn. (CHIH, DGO, ZAC).
Muhlenbergia fragilis Swallen (AGS, BC, BCS, CHIH, CHIS, COAH, DGO, GTO, GRO, JAL, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, VER, ZAC).
*Muhlenbergia gigantea (E. Fourn.) Hitchc. (CHIH, CHIS, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, OAX, PUE, SLP, SIN, VER).
Muhlenbergia glauca (Nees) B.D. Jacks. (AGS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, NL, PUE, SLP, SON, ZAC).
*Muhlenbergia grandis Vasey (JAL, NAY, SIN, SON).
*Muhlenbergia gypsophila Reeder & C. Reeder (COAH, NL, QRO, SLP).
**Muhlenbergia hintonii Swallen (MÉX).
Muhlenbergia imperfecta (Nash) Columbus (CHIH, DGO, MÉX, OAX, SLP, SON, VER).
Muhlenbergia implicata (Kunth) Trin. (AGS, BC, CHIH, CHIS, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, TLX, VER, ZAC).
**Muhlenbergia iridifolia Soderstr. (JAL).
**Muhlenbergia jaime-hintonii P.M. Peterson & Valdés-Reyna (NL).
**Muhlenbergia jaliscana Swallen (JAL).
**Muhlenbergia laxa Hitchc. (VER).
*Muhlenbergia ligulata (E. Fourn.) Scribn. & Merr. (AGS, CHIH, CDM, DGO, GTO, JAL, MÉX, SLP, ZAC).
Muhlenbergia lindheimeri Hitchc. (CHIH, COAH, NL).
*Muhlenbergia longiglumis Vasey (AGS, DGO, GTO, JAL, MÉX, MICH, ZAC).
Muhlenbergia longiligula Hitchc. (CHIH, DGO, JAL, PUE, SON).
*Muhlenbergia lucida Swallen (CHIH, GTO, MÉX, SON).
Muhlenbergia macroura (Kunth) Hitchc. (AGS, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, SLP, TLX, VER).
**Muhlenbergia majalcensis P.M. Peterson (CHIH).
*Muhlenbergia michisensis Y. Herrera & P.M. Peterson (DGO, GRO).
Muhlenbergia microsperma (DC.) Kunth (AGS, BC, BCS, CHIH, CHIS, COAH, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, TLX, VER, ZAC).
Muhlenbergia minutissima (Steud.) Swallen (AGS, BC, CHIH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN, SON, TAM, TLX, VER, ZAC).
Muhlenbergia montana (Nutt.) Hitchc. (AGS, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, SON, TLX, ZAC).
*Muhlenbergia mucronata (Kunth) Trin. (CHIH, DGO, GTO, MÉX, OAX, SIN, ZAC).
*Muhlenbergia mutica (Rupr. ex E. Fourn.) Hitchc. (CHIS, PUE, VER).
Muhlenbergia nigra Hitchc. (CHIS, CDM, GTO, JAL, MÉX, MICH, MOR, OAX, PUE, TLX, VER).
Muhlenbergia orophila Swallen (CDM, MÉX, MOR, PUE).
Muhlenbergia palmeri Vasey (CHIH, DGO, MICH, SON).
Muhlenbergia paniculata (Nutt.) Columbus (COAH, TAM).
Muhlenbergia pauciflora Buckley (BC, CHIH, COAH, DGO, JAL, NL, SON).
Muhlenbergia pectinata C.O. Goodd. (CHIH, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, SIN, SON, ZAC).
Muhlenbergia pereilema P.M. Peterson (AGS, BC, BCS, CHIH, CHIS, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SIN, VER).
Muhlenbergia peruviana (P. Beauv.) Steud. (AGS, CHIH, CHIS, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, SLP, SIN, TLX, VER, ZAC).
Muhlenbergia phalaroides (Kunth) P.M. Peterson (AGS, BCS, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, TAM, TLX, VER, ZAC).
Muhlenbergia phleoides (Kunth) Columbus (AGS, BC, BCS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, ZAC).
*Muhlenbergia pilosa P.M. Peterson, Wipff & S.D. Jones (GRO, MÉX).
Muhlenbergia plumbea (Trin.) Hitchc. (D.F, DGO, HGO, MÉX, PUE, TLX, ZAC).
Muhlenbergia plumiseta Columbus (CHIS, COL, JAL, MÉX, MICH, MOR, NAY, OAX, VER).
Muhlenbergia polycaulis Scribn. (AGS, BC, BCS, CHIH, COAH, DGO, GTO, HGO, JAL, MÉX, NAY, QRO, SLP, SIN, SON, ZAC).
Muhlenbergia porteri Scribn. ex Beal (BC, CHIH, COAH, DGO, NL, SLP, SON, TAM, ZAC).
*Muhlenbergia pubescens (Kunth) Hitchc. (AGS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, NAY, NL, OAX, PUE, SLP, TLX, ZAC).
*Muhlenbergia pubigluma Swallen (CHIH, COAH, NL, TAM, ZAC).
*Muhlenbergia purpusii Mez (CHIH, COAH, NL, SLP, TAM).
Muhlenbergia quadridentata (Kunth) Trin. (AGS, CHIH, CHIS, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, SON, TLX, VER, ZAC).
Muhlenbergia racemosa (Michx.) Britton (COAH, NL, TAM).
Muhlenbergia ramulosa (Kunth) Swallen (BC, BCS, CHIH, CHIS, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, SLP, SIN, SON, TAM, TLX, VER).
*Muhlenbergia reederorum Soderstr. (DGO, JAL, MICH).
Muhlenbergia repens (J. Presl) Hitchc. (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MOR, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
Muhlenbergia reverchonii Vasey & Scribn. (COAH, NL, PUE, TAM).
Muhlenbergia richardsonis (Trin.) Rydb. (BC, CHIH, CDM, DGO, HGO, PUE, SLP, SON).
Muhlenbergia rigens (Benth.) Hitchc. (AGS, BC, BCS, CHIH, COAH, DGO, JAL, MICH, NL, PUE, SON, ZAC).
Muhlenbergia rigida (Kunth) Kunth (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
Muhlenbergia robusta (E. Fourn.) Hitchc. (AGS, CHIH, CHIS, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, VER, ZAC).
*Muhlenbergia schmitzii Hack. (CHIH, HGO, MÉX, MICH).
Muhlenbergia schreberi J.F. Gmel. (HGO, PUE, QRO, TLX, VER).
*Muhlenbergia scoparia Vasey (CHIH, DGO, JAL, MICH, NAY, SIN, SON, ZAC).
*Muhlenbergia seatonii Scribn. (HGO, PUE, TLX).
Muhlenbergia setarioides E. Fourn. (CHIS, PUE, VER).
Muhlenbergia setifolia Vasey (CHIH, COAH, DGO, GTO, NL, SLP, TAM).
*Muhlenbergia shepherdii (Vasey) Swallen (CHIH, DGO, SON).
Muhlenbergia sinuosa Swallen (CHIH, GRO, SON).
**Muhlenbergia solisii (G.A. Levin) P.M. Peterson (COL).
**Muhlenbergia spatha Columbus (SLP).
*Muhlenbergia speciosa Vasey (CHIH, DGO, JAL, MICH, NAY, SIN, ZAC).
Muhlenbergia spiciformis Trin. (CHIH, CHIS, COAH, HGO, JAL, MÉX, MICH, NL, OAX, PUE, QRO, SLP, TAM, VER).
*Muhlenbergia stricta (J. Presl) Kunth (COL, DGO, GTO, JAL, MÉX, MICH, MOR, NAY, OAX, TAM, VER, ZAC).
*Muhlenbergia strictior Scribn. ex Beal (CHIH, CDM, DGO, MÉX, SON).
**Muhlenbergia subaristata Swallen (DGO).
**Muhlenbergia subbiflora Hitchc. (DGO).
*Muhlenbergia tarahumara P.M. Peterson & Columbus (CHIS, DGO).
Muhlenbergia tenella (Kunth) Trin. (CHIH, CHIS, COL, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SLP, SIN, SON, VER).
Muhlenbergia tenuifolia (Kunth) Kunth (AGS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
Muhlenbergia tenuissima (J. Presl) Kunth (CHIS, COL, JAL, NAY, SON).
Muhlenbergia texana Buckley (BC, BCS, CHIH, DGO, NAY, SIN, SON, ZAC).
Muhlenbergia torreyi (Kunth) Hitchc. ex Bush (CHIH, COAH, DGO, NL, SLP, SON).
Muhlenbergia tricholepis (Torr.) Columbus (AGS, BC, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MOR, NL, PUE, SLP, SON, TAM, TLX).
Muhlenbergia uniseta (Lag.) Columbus (AGS, BC, BCS, CHIH, CHIS, CDM, DGO, GTO, GRO, HGO, JAL, MICH, MOR, NAY, NL, OAX, QRO, SLP, SIN, SON, TAM, TLX, VER, ZAC).
Muhlenbergia utilis (Torr.) Hitchc. (CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, NL, PUE, QRO, SLP, SON, VER, ZAC).
Muhlenbergia vaginata Swallen (CHIH, CHIS, CDM, DGO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, SIN, TLX, VER).
Muhlenbergia versicolor Swallen (CHIS, CDM, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, VER).
Muhlenbergia villiflora Hitchc.
Muhlenbergia villiflora Hitchc. var. villiflora (CHIH, COAH, DGO, HGO, NL, SLP, TAM, ZAC).
Muhlenbergia virescens (Kunth) Trin. (AGS, CHIH, COAH, DGO, GRO, GTO, HGO, JAL, MÉX, MICH, NAY, NL, QRO, SLP, SON, TAM, ZAC).
*Muhlenbergia virletii (E. Fourn.) Soderstr. (CDM, DGO, MÉX, MICH, MOR, PUE, SLP).
*Muhlenbergia watsoniana Hitchc. (AGS, DGO, JAL, SLP).
Muhlenbergia wrightii Vasey ex J.M. Coult. (BC, CHIH, COAH, DGO, SON, TAM).
**Muhlenbergia xanthodas Soderstr. (CHIS).
Munroa (1/0/0/0; Chloridoideae)
Munroa squarrosa (Nutt.) Torr. (CHIH, COAH).
Nassella (8/0/0/1; Pooideae)
Nassella cernua (Stebbins & Löve) Barkworth (BC).
Nassella lepida (Hitchc.) Barkworth (BC, BCS, PUE).
Nassella leucotricha (Trin. & Rupr.) R.W. Pohl (BC, CHIS, COAH, DGO, GTO, MÉX, NL, OAX, PUE, SLP, TAM, ZAC).
Nassella linearifolia (E. Fourn.) R.W. Pohl (CHIS, CDM, HGO, MÉX, OAX, PUE, TAM, TLX, VER).
Nassella mexicana (Hitchc.) R.W. Pohl (CHIS, HGO, MÉX, OAX, PUE).
Nassella mucronata (Kunth) R.W. Pohl (AGS, BC, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, TAM, TLX, VER, ZAC).
Nassella pulchra (Hitchc.) Barkworth (BCS).
+Nassella tenuissima (Trin.) Barkworth (AGS, CHIH, COAH, DGO, GTO, HGO, MÉX, NL, OAX, PUE, SLP, TAM, TLX, VER, ZAC).
Neyraudia (1/0/0/1; Chloridoideae)
+Neyraudia reynaudiana (Kunth) Keng ex Hitchc. (VER).
Ocellochloa (4/1/0/0; Panicoideae)
Ocellochloa biglandularis (Scribn. & J. G. Sm.) Zuloaga & Morrone (CHIS, GRO, OAX).
*Ocellochloa craterifera (Sohns) Zuloaga & Morrone (GRO, OAX).
Ocellochloa pulchella (Raddi) Zuloaga & Morrone (CHIS, OAX, VER).
Ocellochloa stolonifera (Poir.) Zuloaga & Morrone (CHIS, TAB, VER).
Olmeca (5/2/1/0; Bambusoideae)
Olmeca clarkiae (Davidse & R.W. Phol) Ruíz-Sánchez, Sosa & Mejia-Saulés (CHIS).
*Olmeca fulgor (Soderstr.) Ruíz-Sánchez, Sosa & Mejia-Saulés (OAX, VER).
*Olmeca recta Soderstr. (CHIS, VER).
Olmeca reflexa Soderstr. (CHIS, OAX, VER).
**Olmeca zapotecorum Ruíz-Sánchez, Sosa & Mejia-Saulés (OAX).
Olyra (2/0/0/0; Bambusoideae)
Olyra glaberrima Raddi (CAM, CHIS, OAX, QROO, SLP, TAB, YUC).
Olyra latifolia L. (CAM, CHIS, COL, GRO, JAL, MICH, NAY, OAX, PUE, QRO, QROO, SLP, TAB, TAM, VER, YUC).
Oplismenus (3/0/0/0; Panicoideae)
Oplismenus burmannii (Retz.) P. Beauv.
Oplismenus burmannii (Retz.) P. Beauv. var. burmannii (CHIH, CHIS, DGO, ZAC).
Oplismenus burmannii var. nudicaulis (Vasey) Mc Vaugh (BCS, CAM, CHIH, CHIS, COL, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SIN, SON, TAB, VER, YUC, ZAC).
Oplismenus compositus (L.) P. Beauv. (CHIS, COL, DGO, GRO, JAL, MÉX, MICH, NAY, OAX, SIN, VER).
Oplismenus hirtellus (L.) P. Beauv.
Oplismenus hirtellus (L.) P. Beauv. subsp. hirtellus (AGS, BC, CAM, CHIS, JAL, MICH, MOR, PUE, QROO, SON, TAM, VER, YUC).
Oplismenus hirtellus subsp. setarius (Lam.) Mez ex E. Ekmann (CAM, CHIS, GTO, HGO, JAL, MICH, NAY, NL, OAX, PUE, QROO, SLP, VER).
Orcuttia (2/0/1/0; Chloridoideae)
Orcuttia californica Vasey (AGS, BC).
**Orcuttia fragilis Swallen (BCS).
Orthoclada (1/0/0/0; Panicoideae)
Orthoclada laxa (Rich.) P. Beauv. (CHIS, OAX, TAB, VER).
Oryza (3/0/0/2; Oryzoideae)
Oryza latifolia Desv. (CAM, CHIS, COL, GRO, JAL, NAY, OAX, SIN, TAB, VER, YUC).
+Oryza rufipogon Griff. (CHIS, NAY, OAX, VER).
+Oryza sativa L. (CAM, NAY, TAB, VER).
Otatea (11/4/6/0; Bambusoideae)
*Otatea acuminata (Munro) C.E. Calderón & Soderstr. (CHIH, CHIS, COL, DGO, GTO, GRO, JAL, MÉX, MICH, NAY, OAX, PUE, QRO, SIN, SON, VER, ZAC).
**Otatea carrilloi Ruíz-Sánchez, Sosa & Mejia-Saulés (CHIS).
Otatea fimbriata Soderstr. (CHIS).
**Otatea glauca L.G. Clark & Cortés (CHIS).
**Otatea nayeeri Ruíz-Sánchez (NAY).
**Otatea ramirezii Ruíz-Sánchez (QRO).
*Otatea reynosoanna Ruíz-Sánchez & L.G. Clark (GRO, JAL, NAY).
**Otatea rzedowskiorum Ruíz-Sánchez (CHIS).
*Otatea transvolcanica Ruíz-Sánchez & L.G. Clark (COL, JAL, MÉX).
**Otatea victoriae Ruíz-Sánchez (HGO).
*Otatea ximenae Ruíz-Sánchez & L.G. Clark (MICH, OAX).
Panicum (47/4/2/3; Panicoideae)
Panicum alatum Zuloaga & Morrone
Panicum alatum Zuloaga & Morrone var. alatum (BCS, DGO, PUE, VER).
Panicum alatum var. longiflorum Zuloaga & Morrone (BC, SON).
Panicum alatum var. minus (Andersson) Zuloaga & Morrone (BC, BCS, CAM, CHIH, CHIS, COAH, COL, GRO, JAL, MICH, MOR, OAX, SLP, SIN, SON, TAM, VER).
Panicum altum Hitchc. & Chase (BCS, CAM, QROO, YUC).
Panicum amarum Elliott
Panicum amarum var. amarulum (Hitchc. & Chase) P. Palmer (CAM, CHIS, QROO, TAB, TAM, YUC).
Panicum amarum Elliott var. amarum (QROO, TAB, TAM, VER).
+Panicum antidotale Retz. (BC, CHIH, COAH, JAL, NL).
Panicum aquaticum Poir. (COL, QROO, VER, YUC).
*Panicum aztecanum Zuloaga & Morrone (CDM, DGO, GRO, JAL, MÉX, MICH, SIN).
Panicum bartlettii Swallen (CAM, CHIS, HGO, OAX, QROO, SLP, TAB, VER, YUC).
Panicum capillare L. (NL, SLP, TAM).
Panicum capillarioides Vasey (NL, SLP, TAM).
Panicum cayennense Lam. (CAM, CHIS, OAX, QROO, TAB, VER).
+Panicum coloratum L. (AGS, COAH, GRO, NL, SLP, SON).
Panicum cordovense E. Fourn. (CHIS, HGO, PUE, VER).
*Panicum decolorans Kunth (CHIS, DGO, GTO, HGO, JAL, MÉX, MICH, OAX, PUE, QRO, SLP, SIN).
Panicum dichotomiflorum Michx. (CHIH, CHIS, COL, JAL, MÉX, NAY, PUE, SIN, SON).
Panicum elephantipes Nees ex Trin. (CDM, GTO, HGO, JAL, MÉX, MICH, SLP, SIN, TAB).
Panicum ghiesbreghtii E. Fourn. (CAM, CHIS, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, SLP, SIN, TAB, TAM, VER, YUC).
Panicum gouinii E. Fourn. (VER, YUC).
Panicum grande Hitchc. & Chase (CHIS, TAB, VER).
Panicum haenkeanum J. Presl (CHIS, VER).
Panicum hallii Vasey
Panicum hallii var. filipes (Scribn.) F.R. Waller (COAH, HGO, MÉX, NL, OAX, PUE, QRO, SLP, TAM, VER).
Panicum hallii Vasey var. hallii (OAX, SLP).
Panicum havardii Vasey (CHIH).
Panicum hirsutum Sw. (CAM, CHIS, COL, OAX, QROO, SLP, TAB, TAM, VER, YUC).
Panicum hirticaule J. Presl
Panicum hirticaule J. Presl var. hirticaule (BC, CHIS, GRO, JAL, NAY, OAX, SON, TAB, VER).
Panicum hirticaule var. verrucosum Zuloaga & Morrone (CHIH, COAH, COL, DGO, GRO, JAL, NAY, SIN, SON, VER, ZAC).
Panicum hirtum Lam. (CHIS, OAX).
Panicum hispidifolium Swallen (CHIS, OAX).
Panicum hylaeicum Mez (CAM, CHIS, QROO, SLP, TAB, VER, YUC).
Panicum lepidulum Hitchc. & Chase (AGS, CHIS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, SLP, SON, ZAC).
**Panicum longum Hitchc. & Chase (VER).
Panicum millegrana Poir. / Chis., Pue., (VER).
Panicum pampinosum Hitchc. & Chase (BCS, CHIH, DGO, GTO, OAX, PUE, SON).
Panicum parcum Hitchc. & Chase (CHIH, CHIS, COAH, COL, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SLP, SIN, TLX).
Panicum pilosum Sw. (CAM, CHIS, GRO, HGO, JAL, MOR, NAY, OAX, PUE, QRO, QROO, SLP, TAB, VER, YUC).
Panicum plenum Hitchc. & Chase (CHIH, COAH, DGO, GRO, JAL, MOR, SON, VER).
Panicum polygonatum Schrad. (CHIS, NAY, OAX, TAB, VER).
+Panicum repens L. (CAM, TAM).
Panicum rudgei Roem. & Schult. (TAB, VER).
Panicum sellowii Nees (CHIS, OAX, PUE, VER).
Panicum stagnatile Hitchc. & Chase (CHIS, PUE, TAB, VER).
Panicum stramineum Hitchc. & Chase (CHIH, CHIS, DGO, GRO, JAL, MICH, NAY, NL, OAX, SIN, SON).
Panicum sublaeve Swallen (CHIS, COL).
*Panicum tamaulipense F.R. Waller & Morden (SLP, TAM, VER).
Panicum trichanthum Nees (CAM, CHIS, COL, OAX, PUE, QROO, SLP, TAB, TAM, VER, YUC).
Panicum trichoides Sw. (BC, BCS, CAM, CHIH, CHIS, COL, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN, SON, TAB, TAM, VER, YUC).
Panicum urvilleanum Kunth (BC, SON).
*Panicum vaseyanum Scribn. & Beal (BC, BCS, CAM, CHIH, CHIS, COL, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN, SON, TAB, TAM, VER, YUC).
Panicum virgatum L. (BC, CHIH, CHIS, COAH, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, QROO, SLP, SON, TAB, TAM, VER).
**Panicum yecorae Sánchez-Ken (SON).
Pappophorum (4/0/0/0; Chloridoideae)
Pappophorum bicolor E. Fourn. (CHIH, COAH, DGO, GTO, MÉX, NL, SLP, TAM, VER).
Pappophorum pappiferum (Lam.) Kuntze (COAH, OAX, VER).
Pappophorum philippianum Parodi (SON).
Pappophorum vaginatum Buckley (CHIH, COAH, DGO, NL, PUE, SLP, SON TAM, ZAC).
Parapholis (1/0/0/1; Pooideae)
+Parapholis incurva (L.) C.E. Hubb. (BC).
Parodiophyllochloa (1/0/0/0; Panicoideae)
Parodiophyllochloa cordovensis (E. Fourn.) Zuloaga & Morrone (HGO, PUE, VER).
Pascopyrum (1/0/0/0; Pooideae)
Pascopyrum smithii (Rydb.) Barkworth & D.R. Dewey (COAH).
Paspalidium (2/0/0/0; Panicoideae)
Paspalidium chapmanii (Vasey) R.W. Pohl (CAM, QROO, YUC).
Paspalidium geminatum (Forssk.) Stapf (BC, BCS, CAM, CHIS, GTO, GRO, JAL, MÉX, MOR, NAY, OAX, PUE, QROO, SIN, SON, TAB, TAM, VER, YUC).
Paspalum (87/12/3/1; Panicoideae)
Paspalum acuminatum Raddi (CHIS, MICH, MOR, TAB, VER).
Paspalum acutum Chase (VER).
Paspalum adoperiens (E. Fourn.) Chase (CHIS, DGO, OAX, SIN, VER).
Paspalum affine Steud. (CHIS, HGO, MÉX, MOR, OAX, VER).
Paspalum alcalinum Mez (MÉX, MICH, MOR, SLP, VER, YUC).
*Paspalum arsenei Chase (AGS, CDM, HGO, JAL, MÉX, MICH, MOR, NAY, PUE, VER, ZAC).
Paspalum blodgettii Chapm. (CAM, CHIS, OAX, QROO, TAM, VER, YUC).
Paspalum botterii (E. Fourn.) Chase (CAM, CHIH, CHIS, COL, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, S.LP., SIN, SON, TAB, TAM, VER, YUC).
Paspalum caespitosum Flüggé (CAM, CHIS, OAX, PUE, QRO, QROO, TAB, TAM, VER, YUC).
Paspalum campylostachyum (Hack.) S. Denham (CHIS, OAX, PUE, TAB).
Paspalum candidum (Humb. & Bonpl. ex Flüggé) Kunth (CHIS, HGO, JAL, MICH, MOR, PUE, VER).
Paspalum centrale Chase (CHIS, VER).
**Paspalum chiapense Sánchez-Ken (CHIS).
Paspalum clavuliferum C. Wright (CAM, CHIS, COL, GRO, JAL, MICH, NAY, OAX, SIN, TAM, VER, YUC).
Paspalum conjugatum P.J. Bergius (AGS, CAM, CHIS, COL, DGO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, TAB, TAM, VER, ZAC).
Paspalum conspersum Schrad. (CAM, CHIS, COL, CDM, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, SLP, TAM, VER).
Paspalum convexum Humb. & Bonpl. ex Flüggé (AGS, CHIH, CHIS, COL, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SIN, SON, TAB, VER, ZAC).
Paspalum corcovadense Raddi (CAM, OAX, VER, YUC).
Paspalum coryphaeum Trin. (CAM, YUC).
Paspalum costaricense Mez (CHIS, OAX).
*Paspalum crinitum Chase (COAH, DGO, GTO, JAL, MÉX, NL, PUE, SLP ZAC).
Paspalum cymbiforme E. Fourn. (CHIS, JAL, MÉX, OAX, VER).
Paspalum decumbens Sw. (CHIS, DGO, VER).
Paspalum denticulatum Trin. (CHIS, DGO, HGO, JAL, MICH, MOR, NL, OAX, SLP, SIN, TAM, VER, ZAC).
Paspalum dilatatum Poir. (BC, CHIS, COAH, DGO, JAL, MÉX, MICH, OAX, QRO, SLP, TAM, VER).
Paspalum distichum L. (AGS, BC, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, TAB, TAM, VER, ZAC).
*Paspalum erectum Chase (COL, GTO, JAL, MICH).
Paspalum erianthum Nees ex Trin. (CHIS, GRO, OAX).
Paspalum fasciculatum Willd. ex Flüggé (CAM, CHIS, JAL, OAX, QROO, TAB, VER).
Paspalum fimbriatum Kunth (BC, CAM, MÉX, QROO, YUC).
Paspalum foliiforme S. Denham (CHIS).
*Paspalum guayanerum Beetle (NAY, SIN, SON).
Paspalum hartwegianum E. Fourn. (AGS, CHIS, GTO, GRO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, SIN, SON, TAM, VER, YUC).
Paspalum heterotrichon Trin. (CHIS).
*Paspalum hintonii Chase (COL, GRO, JAL, MÉX, MICH, NAY, OAX).
Paspalum humboldtianum Flüggé (AGS, CHIS, COAH, COL, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN, SON, TAM, VER, ZAC).
Paspalum intermedium Munro ex Morong et Britton (CHIS, JAL, MÉX, MICH, MOR, NAY, VER).
Paspalum jaliscanum Chase (CHIS, COL, CDM, DGO, HGO, JAL, MICH, OAX, PUE, SLP, VER, ZAC).
Paspalum lentiginosum J. Presl (BC, BCS, CHIS, COL, DGO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, SIN, SON, VER).
*Paspalum leptachne Chase (NAY, SIN, VER).
Paspalum ligulare Nees (JAL, OAX, SIN, VER).
Paspalum lineare Trin. (CHIS, PUE, TAB).
*Paspalum longicuspe Nash (CHIS, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, SIN, VER).
**Paspalum longum Chase (COL).
*Paspalum luxurians R. Guzmán & L. Rico (GTO, JAL, MÉX).
Paspalum malacophyllum Trin. (CAM, CHIS, GTO, QRO, QROO, SLP, TAB, TAM, VER, YUC).
*Paspalum mayanum Chase (CAM, CHIS, TAB, YUC).
Paspalum melanospermum Desv. ex Poir. (JAL, NAY, OAX).
Paspalum microstachyum J. Presl (NAY, TAB, VER).
Paspalum millegrana Schrad. (CAM, CHIS, PUE, QROO, TAB, TAM, VER, YUC).
Paspalum minus E. Fourn. (CHIS, GTO, MÉX, MICH, OAX, PUE, SLP, TAB, TAM, VER).
Paspalum monostachyum Vasey (VER).
Paspalum multicaule Poir. (CHIS, GRO, JAL, MÉX, NAY, OAX, TAB, VER).
*Paspalum nelsonii Chase (CHIS, COAH, GTO, HGO, JAL, NAY, NL, OAX, PUE, QRO, SLP, TAM, VER).
Paspalum notatum Alain ex Flüggé (AGS, BC, CAM, CHIS, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QROO, SLP, TAB, TAM, VER, YUC, ZAC).
Paspalum nutans Lam. (CHIS, QRO).
Paspalum orbiculatum Poir. (CHIS, GRO, OAX, SLP, SIN, TAB, VER).
Paspalum paniculatum L. (AGS, BC, BCS, CAM, CHIS, COAH, COL, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, SLP, SIN, TAB, TAM, VER, YUC, ZAC).
*Paspalum paucispicatum Vasey (BC, CHIH, CDM, JAL, MÉX, NL, OAX, SON, TAB).
Paspalum pectinatum Nees ex Trin. (CHIS, OAX, TAB, VER).
Paspalum pilosum Lam. (CHIS, MÉX, MICH, OAX, TAB, VER).
Paspalum plenum Chase (CHIS, COL, JAL, MÉX, MOR, NAY, NAY, VER).
Paspalum plicatulum Michx. (AGS, CAM, CHIS, COAH, COL, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QROO, SLP, SIN, TAB, TAM, VER, YUC, ZAC).
Paspalum prostratum Scribn. et Merr. (CHIS, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, VER).
Paspalum pubiflorum Rupr. ex E. Fourn. (AGS, BC, BCS, CAM, CHIH, COAH, DGO, GRO, GTO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, SON, TAM, VER, ZAC).
Paspalum pulchellum Kunth (CHIS, OAX, TAB, VER).
Paspalum pygmaeum Hack. (CDM, DGO, GRO, JAL, MICH, MOR, TLX, VER).
Paspalum repens P.J. Bergius (CAM, CHIS, OAX, TAB, VER).
+Paspalum scrobiculatum L. (JAL).
Paspalum serpentinum Hochst. ex Steud. (TAB).
Paspalum setaceum Michx.
Paspalum setaceum var. ciliatifolium (Michx.) Vasey (COAH, MÉX, NL, SLP, TAB, TAM, VER).
Paspalum setaceum var. psammophyllum (Nash ex Hitchc.) D.J. Banks (VER).
Paspalum setaceum Michx. var. setaceum (TAM, VER).
Paspalum setaceum var. stramineum (Nash) D.J. Banks (CHIH, DGO, JAL, MÉX, NL, SON, TAM, VER).
*Paspalum sparsum Chase (CAM, YUC).
Paspalum squamulatum E. Fourn. (BCS, CHIS, COL, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN, SON, TAM, VER).
Paspalum stellatum Humb. & Bonpl. ex Flüggé (CHIS, OAX).
Paspalum tenellum Willd. (AGS, CHIS, CDM, GRO, GTO, JAL, MÉX, MICH, MOR, PUE, QRO, SON, TAM, VER, ZAC).
Paspalum tinctum Chase (CDM, GRO, GTO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO).
**Paspalum tolucense R. Guzmán (MÉX).
Paspalum trachycoleon Steud. (CHIS, OAX).
Paspalum tumidum Kuhlm. (CHIS, COL, GRO, JAL, MÉX, MICH).
Paspalum turriforme R.W. Pohl (CHIS, MICH).
Paspalum unispicatum (Scribn. & Merr.) Nash (CHIS, GRO, JAL, MOR, NL, OAX, PUE, SLP, TAM, VER).
Paspalum urvillei Steud. (AGS, BC, BC, SUR, CHIS, COAH, JAL, MÉX, MICH, MOR, NL).
Paspalum vaginatum Sw. (BCS, CAM, CHIS, COL, GRO, JAL, MÉX, MICH, NAY, OAX, PUE, QRO, QROO, SLP, TAB, TAM, VER, YUC, ZAC).
Paspalum variabile (E. Fourn.) Nash (CHIS, COL, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, TAM, VER).
Paspalum virgatum L. (CAM, CHIS, COL, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, SLP, TAB, TAM, VER, YUC).
Paspalum virletii E. Fourn. (HGO, NL, PUE, QRO, SLP, SON, TAM, VER).
Paspalum wrightii Hitchc. & Chase (CAM, TAB, YUC).
Pennisetum (2/0/0/1; Panicoideae)
Pennisetum nervosum (Nees) Trin. (CHIS, PUE, SLP, TAM, VER).
+Pennisetum villosum R. Br. ex Fresen. (AGS, CHIS, COAH, CDM, DGO, JAL, MÉX, MICH, MOR, NL, QRO, SIN, TAM, ZAC).
Peyritschia (4/0/2/0; Pooideae)
Peyritschia deyeuxioides (Kunth) Finot (AGS, CHIH, CHIS, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, SLP, VER, ZAC).
**Peyritschia humilis (Louis-Marie) Finot (MÉX).
Peyritschia koelerioides (Peyr.) E. Fourn. (MÉX, MICH, OAX, PUE, VER).
Peyritschia pringlei (Scribn.) S.D. Koch (AGS, CHIH, CHIS, DGO, GTO, HGO, JAL, MÉX, PUE, QRO, SLP, SON, TLX).
Phalaris (7/0/0/3; Pooideae)
Phalaris angusta Nees ex Trin. (BC, CHIH).
+Phalaris aquatica L. (CHIH).
Phalaris arundinacea L. (BC, CHIH).
+Phalaris canariensis L. (CAM, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, NL, OAX, PUE, SIN, TAM, TLX, VER, ZAC).
Phalaris caroliniana Walter (BC, CHIH, COAH, SON).
+Phalaris minor Retz. (BC, CHIS, GTO, HGO, JAL, MÉX, MICH, MOR, NL, PUE, QRO, SIN, SON, VER).
Phalaris paradoxa L. (BC, CHIH, JAL).
Pharus (4/0/0/0; Pharoideae)
Pharus lappulaceus Aubl. (CAM, CHIS, SLP, TAB, VER).
Pharus latifolius L. (CHIS, MÉX, OAX, QROO, SLP, TAB, VER).
Pharus mezii Prod. (CHIS, GRO, JAL, MICH, VER).
Pharus parvifolius Nash (CHIS, TAB, VER).
Phleum (2/0/0/1; Pooideae)
Phleum alpinum L. (CHIS, COAH, MÉX, NL, PUE, VER).
+Phleum pratense L. (JAL, MÉX).
Phragmites (1/0/0/0; Arundinoideae)
Phragmites australis (Cav.) Trin. ex Steud. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, TLX, VER, YUC, ZAC).
Phyllostachys (3/0/0/3; Bambusoideae)
+Phyllostachys aurea Rivière & C. Rivière (CDM, VER).
+Phyllostachys bambusoides Siebold & Zucc. (PUE, VER).
+Phyllostachys dulcis McClure (PUE, VER).
Piptochaetium (9/1/0/0; Pooideae)
*Piptochaetium angustifolium (Hitchc.) Valencia & Costas (COAH, MÉX, NL, TAM).
Piptochaetium avenaceum (L.) Parodi (TAM).
Piptochaetium brevicalyx (E. Fourn.) Ricker
*Piptochaetium brevicalyx (E. Fourn.) Ricker subsp. brevicalyx (GTO, HGO, MOR, NL, PUE, SLP).
*Piptochaetium brevicalyx subsp. flexuosum Barkworth (DGO).
Piptochaetium fimbriatum (Kunth) Hitchc. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QROO, SLP, SIN, SON, TAM, TLX, VER, ZAC).
Piptochaetium pringlei (Beal) Parodi (BC, CHIH, COAH, DGO, GTO, NL, OAX, PUE, SLP, SON).
Piptochaetium seleri (Pilg.) Henrard (CHIS, COAH, CDM, HGO, MÉX, MICH, MOR, OAX, PUE, QRO, TAM, TLX, VER).
Piptochaetium stipoides (Trin. & Rupr.) Hack. ex Arechav.
Piptochaetium stipoides (Trin. & Rupr.) Hack. ex Arechav. var. stipoides (GTO, JAL, NL, PUE, SLP).
Piptochaetium uruguense Griseb. (S.L.P).
Piptochaetium virescens (Kunth) Parodi
*Piptochaetium virescens var. arsenii (Hack.) Beetle (MICH, MOR).
*Piptochaetium virescens (Kunth) Parodi var. virescens (DGO, VER, ZAC).
Poa (23/1/3/3; Pooideae)
Poa alpina L.
Poa alpina L. subsp. alpina (OAX, PUE, VER).
+Poa annua L. (AGS, BC, BCS, CHIH, CHIS, COAH, COL, CDM, DGO, GRO, GTO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
**Poa bajaensis Soreng (BC).
Poa bigelovii Vasey & Scribn. (BC, BCS, CHIH, COAH, NL, SON).
Poa calycina (J. Presl) Kunth
Poa calycina var. mathewsii (Ball) Refulio (MÉX, PUE, SLP, TLX, VER).
Poa chamaeclinos Pilg. (MÉX, PUE).
+Poa compressa L. (COAH).
Poa fendleriana (Steud.) Vasey
Poa fendleriana subsp. albescens (Hitchc.) Soreng. (CHIH, SON).
Poa fendleriana (Steud.) Vasey subsp. fendleriana (BC, CHIH, COAH, SON).
Poa fendleriana subsp. longiligula (Scribn. & T.A. Williams) Soreng (BC).
Poa gymnantha Pilg. (MÉX).
+Poa infirma Kunth (BC).
Poa matri-occidentalis P.M. Peterson & Soreng
**Poa matri-occidentalis P.M. Peterson & Soreng subsp. matri-occidentalis (DGO).
**Poa matri-occidentalis subsp. mohinorensis Soreng & P.M. Peterson (CHIH).
**Poa mulleri Swallen, J. Wash. (NL).
Poa occidentalis (Vasey) Vasey (COAH).
Poa orizabensis Hitchc. (MÉX, PUE, VER).
*Poa palmeri Soreng & P.M. Peterson (COAH, NL).
Poa pratensis L.
Poa pratensis subsp. agassizensis (B. Boivin & D. Löve) Roy L. Taylor & MacBryde (BC, COAH).
Poa pratensis subsp. alpigena (Lindm.) Hiitonen (NL).
+Poa pratensis subsp. angustifolia (L.) Lej. (SLP).
Poa pratensis subsp. irrigata (Lindm.) H. Lindb. (VER).
+Poa pratensis L. subsp. pratensis (BC, CHIH, COAH, CDM, HGO, MÉX, NL, VER).
Poa ruprechtii Peyr. (CDM, HGO, MÉX, OAX, SLP, VER).
Poa scaberula Hook. f. (CHIS, CDM, MÉX, MOR, PUE, TLX, VER).
Poa secunda J. Presl
Poa secunda subsp. juncifolia (Scribn.) Soreng. (BC).
Poa secunda J. Presl subsp. secunda (BC).
Poa seleri Pilg. (CHIS, HGO, MÉX, MOR, , OAX, PUE, VER).
Poa strictiramea Hitchc. (CHIH, COAH, DGO, ZAC).
Poa thomasii Refulio (BC).
**Poa wendtii Soreng & P.M. Peterson (COAH).
Polypogon (6/0/0/3; Pooideae)
Polypogon australis Brongn. (BC).
Polypogon elongatus Kunth (AGS, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, TAM, VER, ZAC).
Polypogon interruptus Kunth (BC, BCS, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, NL, OAX, PUE, TLX).
+Polypogon maritimus Willd. (BC, NL, SON).
+Polypogon monspeliensis (L.) Desf. (AGS, BC, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, OAX, PUE, QRO, TAM, ZAC).
+Polypogon viridis (Gouan) Breistr. (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, SON, TAM, VER, ZAC).
Pseudechinolaena (1/0/0/0; Panicoideae)
Pseudechinolaena polystachya (Kunth) Stapf (CHIS, GRO, HGO, OAX, PUE, TAB, VER).
Reimarochloa (1/0/0/0; Panicoideae)
Reimarochloa oligostachya (Munro ex Benth.) Hitchc. (COL, TAB).
Rhipidocladum (4/0/1/0; Bambusoideae)
Rhipidocladum bartlettii (McClure) McClure (CAM, CHIS, QROO).
**Rhipidocladum martinezii Davidse & R.W. Pohl (CHIS).
Rhipidocladum pittieri (Hack.) McClure (CHIS).
Rhipidocladum racemiflorum (Steud.) McClure (DGO, JAL, MICH, NAY, OAX, SIN, TAM, VER).
Rhytachne (2/0/0/0; Panicoideae)
Rhytachne guianensis (Hitchc.) Clayton (CHIS, OAX).
Rhytachne rottboellioides Desv. ex Ham. (CHIS, TAB).
Rostraria (1/0/0/1; Pooideae)
+Rostraria cristata (L.) Tzvelev (BC).
Rottboellia (1/0/0/1; Panicoideae)
+Rottboellia cochinchinensis (Lour.) Clayton (CAM, OAX, QROO, TAB, VER).
Saccharum (2/0/0/1; Panicoideae)
+Saccharum officinarum L. (BCS, CAM, CHIS, COL, GRO, JAL, MOR, NAY, OAX, PUE, QROO, TAB, TAM, VER, YUC, ZAC).
Saccharum villosum Steud. (CHIS).
Sacciolepis (2/0/0/0; Panicoideae)
Sacciolepis myuros (Lam.) Chase (CHIS, JAL, MÉX, NAY, OAX, VER).
Sacciolepis striata (L.) Nash (TAB, VER).
Schedonorus (1/0/0/1; Pooideae)
+Schedonorus arundinaceus (Schreb.) Dumort. (CDM, HGO, MÉX, ZAC).
Schismus (2/0/0/2; Danthonioideae)
+Schismus arabicus Nees (BC, CHIH, SON).
+Schismus barbatus (L.) Thell. (BC, CHIH, SON).
Schizachyrium (13/2/1/0; Panicoideae)
Schizachyrium brevifolium (Sw.) Nees ex Büse (CHIH, CHIS, COL, JAL, MÉX, MICH, MOR, NAY, OAX, SIN, TAB, VER, YUC, ZAC).
Schizachyrium cirratum (Hack.) Wooton & Standl. (AGS, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NL, OAX, PUE, QRO, SLP, SON, TAM, TLX, VER, ZAC).
Schizachyrium condensatum (Kunth) Nees (CAM, CHIS, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, SLP, SIN, TAB, TAM, VER).
*Schizachyrium gaumeri Nash (CAM, CHIS, QROO, YUC).
Schizachyrium malacostachyum (J. Presl) Nash (BCS, CAM, CHIS, GRO, JAL, MOR, NAY, OAX, PUE, VER, YUC).
*Schizachyrium mexicanum (Hitchc.) A. Camus (CHIH, CHIS, COL, GTO, JAL, MÉX, MICH, MOR, NAY, NL, SON, VER).
Schizachyrium microstachyum (Desv. ex Ham.) Roseng., B.R. Arrill. & Izag. (CAM, CHIS, CDM, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, VER, YUC).
**Schizachyrium muelleri Nash (VER).
Schizachyrium salzmanni (Trin. ex Steud.) Nash (CHIS, OAX, TAB, TAM, VER).
Schizachyrium sanguineum (Retz.) Alston (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SIN, SON, TAB, TAM, TLX, VER, YUC, ZAC).
Schizachyrium scoparium (Michx.) Nash
Schizachyrium scoparium var. littorale (Nash) Gould (CAM, PUE, TAB, TAM, VER).
Schizachyrium scoparium var. neomexicanum (Nash) Hitchc. (CHIH, COAH, DGO, NL, SLP).
Schizachyrium scoparium (Michx.) Nash var. scoparium (TAM).
Schizachyrium semitectum (Swallen) Reeder (BC, BCS, CHIH, CHIS, GRO, JAL, MÉX, MOR, OAX, SON, YUC).
Schizachyrium tenerum Nees (AGS, CHIH, CHIS, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, SIN, TAM, VER, ZAC).
Scleropogon (1/0/0/0; Chloridoideae)
Scleropogon brevifolius Phil. (AGS, CHIH, COAH, DGO, GTO, HGO, NL, PUE, QRO, SLP, SON, TAM, VER, ZAC).
Secale (1/0/0/1; Pooideae)
+Secale cereale L. (BC, CDM, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, TAM, VER).
Setaria (28/1/1/2; Panicoideae)
Setaria adhaerens (Forssk) Chiov. (AGS, BC, BCS, CHIH, COAH, CDM, DGO, GTO, JAL, MÉX, NL, OAX, PUE, QRO, ZAC).
Setaria arizonica Rominger (SON).
Setaria faberi R.A.W. Herrm. (MÉX).
Setaria grisebachii E. Fourn. (AGS, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SON, TAM, TLX, VER, YUC, ZAC).
*Setaria latifolia (Scribn.) R.A.W. Herrm. (DGO, GTO, JAL, MICH, OAX).
Setaria leucopila (Scribn. & Merr.) K. Schum. (BC, BCS, CHIH, COAH, DGO, GTO, NL, PUE, QRO, SLP, SON, TAM, ZAC).
Setaria liebmannii E. Fourn. (BCS, CHIH, CHIS, COL, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, SIN, SON, VER).
Setaria longipila E. Fourn. (CHIS, JAL, MICH, NAY, OAX).
Setaria macrosperma (Scribn. & Merr.) K. Schum. (DGO, NL, TAM).
Setaria macrostachya Kunth (BC, BCS, CHIH, CHIS, COAH, DGO, HGO, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, SLP, SON, TAM, VER, ZAC).
Setaria magna Griseb. (CAM, COAH, QROO, YUC).
**Setaria palmeri Henrard (BCS).
Setaria palmifolia (J. Konig) Stapf (BCS, CHIS, JAL, MICH, NAY, OAX, PUE, QRO, QROO, QRO, SLP, SON, TAB, VER).
Setaria parviflora (Poir.) Kerguélen (BC, CAM, CHIH, CHIS, COAH, CDM, DGO, GTO, HGO, MÉX, MICH, MOR, NL, OAX, QRO, QROO, SLP, SON, TAB, TAM, VER, YUC, ZAC).
Setaria pumila (Poir.) Roem. & Schult. (DGO).
Setaria reverchonii (Vasey) Pilg.
Setaria reverchonii subsp. firmula (Hitchc. & Chase) W.E. Fox (COAH).
Setaria reverchonii subsp. ramiseta (Scribn.) W.E. Fox (COAH, TAM).
Setaria scandens Schrad. (CAM, CHIS, MÉX, OAX, VER, YUC).
Setaria scheelei (Steud.) Hitchc. (CHIH, CHIS, COAH, DGO, HGO, JAL, MICH, NL, PUE, SLP, TAM, VER).
Setaria setosa (Sw.) P. Beauv. (MICH, NL).
+Setaria sphacelata (Schumach.) Stapf & C.E. Hubb. ex M.B. Moss
+Setaria sphacelata var. sericea (R.E. Massey ex Stapf) Clayton (TAB).
+Setaria sphacelata (Schumach.) Stapf & C.E. Hubb. ex M.B. Moss. var. sphacelata (MÉX).
Setaria sulcata Raddi (OAX, VER).
Setaria tenax (Rich.) Desv. (CAM, CHIS, GRO, JAL, NL, OAX, PUE, QROO, SLP, TAB, VER, YUC).
Setaria texana Emery (NL, TAM).
Setaria variifolia (Swallen) Davidse (CAM, QROO, YUC).
Setaria verticillata (L.) P. Beauv. (BCS, CHIH, COAH, DGO, OAX, PUE, VER).
Setaria villosissima (Scribn. & Merr) K. Schum. (CHIH, COAH, NL, SON, TAM).
+Setaria viridis (L.) P. Beauv. (BC, CHIH, DGO, MOR, PUE, SLP, SON, TAM, VER).
Setaria vulpiseta (Lam.) Roem. & Schult. (CAM, CHIS, OAX, PUE, QROO, SLP, SON, VER, YUC).
Setariopsis (2/1/0/0; Panicoideae)
Setariopsis auriculata (E. Fourn.) Scribn. (BC, BCS, CAM, CHIH, CHIS, COL, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QROO, SLP, SIN, SON, VER, YUC).
*Setariopsis latiglumis (Vasey) Scribn. (CHIH, CHIS, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, ZAC).
Sohnsia (1/1/0/0; Chloridoideae)
*Sohnsia filifolia (E. Fourn.) Airy Shaw (QRO, SLP).
Sorghastrum (7/0/2/0; Panicoideae)
Sorghastrum brunneum Swallen (CHIS, COAH, DGO, GRO, HGO, MICH, NAY, NL, OAX, PUE, QRO, SLP, TAM, VER).
Sorghastrum incompletum (J. Presl) Nash
Sorghastrum incompletum (J. Presl) Nash var. incompletum (CAM, CHIS, COL, HGO, JAL, MICH, MOR, NAY, OAX, YUC, ZAC).
**Sorghastrum nudipes Nash (CHIH).
Sorghastrum nutans (L.) Nash (CHIH, CHIS, COAH, GTO, GRO, JAL, MÉX, MICH, NAY, OAX, PUE, TAM, VER, ZAC).
**Sorghastrum pohlianum Dávila, L. I. Cabrera & Lira (COL).
Sorghastrum setosum (Griseb.) Hitchc. (CAM, CHIS, QRO, TAB, VER, YUC).
Sorghastrum stipoides (Kunth) Nash (CHIS, OAX).
Sorghum (3/0/0/2; Panicoideae)
+Sorghum bicolor (L.) Moench (BC, CAM, CHIH, CHIS, COL, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QROO, TAM, VER, YUC, ZAC).
+Sorghum halepense (L.) Pers. (CAM, CHIH, CHIS, COAH, DGO, GRO, HGO, MÉX, MOR, NAY, NL, OAX, QRO, QROO, SLP, SIN, SON, TAM, VER, YUC, ZAC).
Sorghum trichocladum (Rupr. ex Hack.) Kuntze (CHIS, COL, GRO, JAL, MICH, NAY, OAX, SIN).
Sphenopholis (2/0/0/0; Pooideae)
Sphenopholis interrupta (Buckley) Scribn.
**Sphenopholis interrupta subsp. californica (Vasey) Scribn. (BC).
Sphenopholis interrupta (Buckley) Scribn. subsp. interrupta (BC).
Sphenopholis obtusata (Michx.) Scribn. (COAH, CDM, DGO, GTO, NL, OAX, PUE, SON).
Sporobolus (34/5/3/2; Chloridoideae)
Sporobolus airoides (Torr.) Torr.
Sporobolus airoides (Torr.) Torr. var. airoides (BC, CHIH, COAH, DGO, NL, SLP, ZAC).
**Sporobolus airoides subsp. regis (I.M. Johnst.) Wipff & S.D. Jones (COAH).
*Sporobolus atrovirens (Kunth) Kunth (AGS, BC, BCS, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, OAX, PUE, QRO, QROO, SLP, TAM, TLX, VER, YUC, ZAC).
Sporobolus buckleyi Vasey (CAM, NL, PUE, QROO, TAB, TAM, VER, YUC).
Sporobolus coahuilensis Valdés-Reyna (COAH, DGO).
Sporobolus compositus (Poir.) Merr. (COAH).
Sporobolus contractus Hitchc. (BC, BCS, CHIH, COAH, DGO, JAL, NL, SLP, SON).
Sporobolus cryptandrus (Torr.) A. Gray (BC, BCS, CHIH, COAH, DGO, NL, SON, TAM, ZAC).
Sporobolus cubensis Hitchc. (CHIS, OAX, TAB, VER).
Sporobolus cynosuroides (L.) P.M. Peterson & Saarela (CHIH, TAM).
Sporobolus domingensis (Trin.) Kunth (QROO, YUC).
Sporobolus flexuosus (Thurb. ex Vasey) Rydb. (BC, CHIH, COAH, SIN, SON).
Sporobolus foliosus (Trin.) P.M. Peterson & Saarela (BC, BCS).
Sporobolus giganteus Nash (CHIH, COAH).
**Sporobolus hintonii Hartley (MÉX).
Sporobolus hookerianus P.M. Peterson & Saarela (CHIH, JAL, MICH).
Sporobolus indicus (L.) R. Br.
Sporobolus indicus (L.) R. Br. var. indicus (AGS, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAM, TLX, VER, YUC, ZAC).
Sporobolus junceus (P. Beauv.) Kunth (CHIS, VER).
Sporobolus macrospermus Scribn. ex Beal (AGS, CHIS, DGO, GTO, GRO, JAL, MÉX, MICH, OAX, ZAC).
Sporobolus nealleyi Vasey (COAH, NL, SLP).
+Sporobolus niliacus (Fig. & De Not.) P.M. Peterson (BC).
*Sporobolus palmeri Scribn. (COAH, DGO, SLP, ZAC).
**Sporobolus potosiensis Wipff & S.D. Jones. (SLP).
Sporobolus pumilus (Roth) P.M. Peterson & Saarela (CAM, QROO, TAB, TAM, VER).
Sporobolus purpurascens (Sw.) Ham. (CHIS, COL, OAX, PUE, VER).
Sporobolus pyramidatus (Lam.) Hitchc. (AGS, BC, BCS, CHIH, CHIS, COAH, CDM, DGO, GTO, MÉX, MICH, OAX, PUE, QRO, QROO, SON, TAM, VER, YUC, ZAC).
+Sporobolus schoenoides (L.) P.M. Peterson (BC).
Sporobolus spartinus (Trin.) P.M. Peterson & Saarela (CAM, COAH, NL, OAX, QROO, SLP, TAB, TAM, VER, YUC).
*Sporobolus spiciformis Swallen (CHIH, COAH, CDM, DGO).
*Sporobolus splendens Swallen (CHIS, COL, JAL, NAY, OAX).
Sporobolus tenuissimus (Mart. ex Schrank) Kuntze (CHIS, MICH).
*Sporobolus trichodes Hitchc. (AGS, CHIH, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, VER, ZAC).
Sporobolus virginicus (L.) Kunth (BC, BCS, CAM, CHIS, JAL, NL, OAX, QROO, SON, TAB, TAM, VER, YUC).
**Sporobolus viscidus Sohns / MÉX.
Sporobolus wrightii Munro ex Scribn. (AGS, BC, BCS, CHIH, COAH, DGO, HGO, NL, PUE, SLP, SON, TAM, VER, ZAC).
Stapfochloa (2/0/0/1; Chloridoideae)
+Stapfochloa canterae (Arechav.) P.M. Peterson (CHIS).
Stapfochloa ciliata (Sw.) P.M. Peterson (CAM, CHIS, COAH, HGO, NL, OAX, PUE, QRO, QROO, SLP, TAM, VER, YUC).
Steinchisma (2/1/0/0; Panicoideae)
*Steinchisma cupreum (Hitchc. & Chase) W.V. Br. (DGO, JAL, MÉX, PUE, QRO, VER, ZAC).
Steinchisma hians (Elliott) Nash (CHIS, DGO, GTO, JAL, MICH).
Stenotaphrum (1/0/0/0; Panicoideae)
Stenotaphrum secundatum (Walter) Kuntze (AGS, BC, BCS, CAM, CHIH, CHIS, JAL, MICH, MOR, PUE, QROO, TAB, VER, YUC).
Stephostachys (1/0/0/0; Panicoideae)
Stephostachys mertensii (Roth) Zuloaga & Morrone (JAL, TAB, VER).
Streptochaeta (2/0/0/0; Anomochlooideae)
Streptochaeta sodiroana Hack. (CHIS, TAB).
Streptochaeta spicata Schrad. ex Nees (CHIS, OAX, VER).
Streptogyna (1/0/0/0; Oryzoideae)
Streptogyna americana C.E. Hubb. (CHIS, VER).
Tetrapogon (2/0/1/0; Chloridoideae)
**Tetrapogon brandegei (Vasey) P.M. Peterson (BCS).
Tetrapogon chlorideus (J. Presl) P.M. Peterson (BC, BCS, CHIS, CDM, GTO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, SLP, SIN, SON, TAM, VER, ZAC).
Thinopyrum (1/0/0/1; Pooideae)
+Thinopyrum intermedium (Host) Barkworth & D.R. Dewey (CHIH).
Thrasya (1/0/0/0; Panicoideae)
Thrasya campyylostachya (Hack.) Chase (CHIS, OAX, PUE, TAB, VER).
Trachypogon (1/0/0/0; Panicoideae)
Trachypogon spicatus (L. f.) Kuntze (CAM, CHIH, DGO, OAX, VER, YUC, ZAC).
Tragus (1/0/0/1; Chloridoideae)
+Tragus berteronianus Schult. (AGS, BC, BCS, CHIH, COAH, CDM, DGO, GTO, HGO, JAL, MÉX, NL, OAX, PUE, QRO, SLP, SON, TAM, ZAC).
Trichanthecium (1/0/0/0; Panicoideae)
Trichanthecium cyanescens (Nees ex Trin.) Zuloaga & Morrone (CHIS).
Trichoneura (1/0/0/0; Chloridoideae)
Trichoneura elegans Swallen (TAM).
Tridens (3/0/0/1; Chloridoideae)
Tridens albescens (Vasey) Wooton & Standl. (CHIH, COAH, NL, TAM).
+Tridens flavus (L.) Hitchc. (NL).
Tridens texanus (S. Watson) Nash (CHIH, COAH, NL, SLP, TAM).
Tridentopsis (1/0/0/0; Chloridoideae)
Tridentopsis mutica (Torr.) P.M. Peterson (BC, CHIH, COAH, DGO, NL, QRO, SLP, SON, TAM, YUC, ZAC).
Triniochloa (5/3/1/0; Pooideae)
*Triniochloa gracilis Gómez-Sánchez & Gonz.-Led. (GRO, OAX).
*Triniochloa laxa Hitchc. (CHIH, CHIS).
*Triniochloa micrantha (Scribn.) Hitchc. (MÉX, MOR).
Triniochloa stipoides (Kunth) Hitchc. (CHIS, CDM, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, OAX, PUE, QRO, SLP, VER).
**Triniochloa talpensis Gonz.-Led. & Gómez-Sánchez (JAL).
Triplasiella (1/0/0/0; Chloridoideae)
Triplasiella eragrostoides (Vasey & Scribn.) P.M. Peterson & Romasch. (COAH, NL, OAX, TAM, YUC).
Triplasis (1/0/0/0; Chloridoideae)
Triplasis purpurea (Walter) Chapm. (TAB, VER).
Tripogonella (1/0/0/0; Chloridoideae)
Tripogonella spicata (Nees) P.M. Peterson & Romasch. (AGS, CAM, CDM, DGO, GTO, JAL, MÉX, QRO, SLP, VER, ZAC).
Tripsacum (13/1/1/0; Panicoideae)
Tripsacum andersonii J.R. Gray (CAM, CHIS, VER).
*Tripsacum bravum J.R. Gray (GRO, JAL, MÉX, NAY).
Tripsacum dactyloides (L.) L.
Tripsacum dactyloides (L.) L. var. dactyloides (AGS, CHIS, COAH, CDM, DGO, GRO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, SLP, TAM).
Tripsacum dactyloides var. hispidum (Hitchc.) de Wet & J.R. Harlan (CHIS, COL, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NL, PUE, QRO, SLP, SIN, TAM).
Tripsacum dactyloides var. mexicanum de Wet & J.R. Harlan (CAM, JAL, MICH, NAY, QROO, YUC).
Tripsacum floridamum.Porter ex Vasey (TAM).
Tripsacum intermedium de Wet & J.R. Harlan (CHIS, GRO).
Tripsacum jalapense de Wet & Brink (AGS, CHIS, GRO, JAL, OAX).
Tripsacum lanceolatum Rupr. ex E. Fourn. (AGS, BC, CAM, CHIH, DGO, HGO, JAL, MÉX, MICH, OAX, PUE, SLP, SIN, SON, ZAC).
Tripsacum latifolium Hitchc. (CHIS, MICH, NAY, OAX, PUE, QROO).
Tripsacum laxum Nash (CHIS, COL, GRO, JAL, MICH, NAY, OAX, VER).
Tripsacum maizar Hern.-Xol. & Randolph (CHIS, COL, GTO, GRO, JAL, NAY, OAX).
**Tripsacum manisuroides de Wet & J.R. Harlan (CHIS).
Tripsacum pilosum Scribn. & Merr. (CHIH, CHIS, COL, DGO, GRO, JAL, MÉX, MICH, NAY, OAX, SLP, ZAC).
Tripsacum zopilotense Hern.-Xol. & Randolph (CHIH, CHIS, COL, DGO, GTO, GRO, JAL, MÉX, OAX, PUE, SLP, SIN, TLX, ZAC).
Trisetum (16/6/3/0; Pooideae)
Trisetum angustum Swallen (CHIS).
**Trisetum barbatipaleum (Hultén ex Veldkamp) Finot (HGO).
**Trisetum curvisetum Morden & Valdés-Reyna (NL).
**Trisetum durangense Finot & P. M. Peterson (DGO).
*Trisetum filifolium Scribn. ex Beal
*Trisetum filifolium Scribn. ex Beal var. filifolium (CHIH, DGO, HGO, MÉX).
*Trisetum filifolium var. aristatum Scribn. ex Beal (CHIH, CHIS, COAH, DGO, HGO, MÉX).
Trisetum irazuense (Kuntze) Hitchc. (CHIS, CDM, DGO, HGO, MÉX, OAX, PUE, SLP, VER).
*Trisetum ligulatum Finot & Zuloaga (JAL, VER).
*Trisetum martha-gonzaleziae P. M. Peterson & Finot (CHIH, DGO).
*Trisetum palmeri Hitchc. (CHIH, COAH, DGO, JAL, NL, SIN, SON).
Trisetum pinetorum Swallen (CHIS).
Trisetum pringlei (Scribn. ex Beal) Hitchc. (CHIS, OAX, PUE).
Trisetum rosei Scribn. & Merr. (CHIS, HGO, MÉX, PUE, VER).
*Trisetum spellenbergii Soreng, Finot & P. M. Peterson (CHIH, SON).
Trisetum spicatum (L.) K. Richt. (CHIH, CHIS, COAH, CDM, DGO, HGO, JAL, MÉX, MICH, NL, PUE, QRO, SLP, VER).
Trisetum viride (Kunth) Kunth (CHIH, CHIS, COAH, DGO, GRO, GTO, JAL, MÉX, MICH, OAX, QRO).
*Trisetum virletii E. Fourn. (CHIH, CHIS, CDM, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NL, PUE, QRO, SLP, VER).
Tristachya (5/1/3/0; Panicoideae)
**Tristachya angustifolia Hitchc. (NAY).
Tristachya avenacea (J. Presl) Scribn. & Merr. (CHIS, GRO, JAL, MÉX, MICH, NAY, OAX).
**Tristachya contrerasii R. Guzmán (JAL).
*Tristachya laxa Scribn. & Merr. (DGO, NAY, SIN).
**Tristachya papilosa R. Guzmán (NAY).
Triticum (1/0/0/1; Pooideae)
+Triticum aestivum L. (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, TLX, VER, YUC, ZAC).
Uniola (2/0/0/1; Chloridoideae)
+Uniola paniculata L. (CHIS, TAB, TAM, VER).
Uniola pittieri Hack. (BC, BCS, CHIS, COL, JAL, NAY, OAX, SIN, SON, VER).
Urochloa (18/5/1/3; Panicoideae)
Urochloa arizonica (Scribn. & Merr.) Morrone & Zuloaga (BC, BCS, CHIH, COAH, DGO, GRO, JAL, NAY, NL, OAX, SIN, SON, TAM).
Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster (CAM, NAY, PUE, YUC).
Urochloa ciliatissima (Buckley) R.D. Webster (NL, TAM).
*Urochloa discifera (E. Fourn.) Morrone & Zuloaga (AGS, DGO, GTO, JAL, MICH, NAY, OAX, SLP).
*Urochloa distachya (L.) T.Q. Nguyen (CHIS, JAL, NL, OAX, TAB, TAM, VER, YUC).
Urochloa fusca (Sw.) B.F. Hansen & Wunderlin (BC, BCS, CAM, CHIH, CHIS, COAH, COL, DGO, GTO, GRO, HGO, JAL, MÉX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAM, VER, YUC, ZAC).
*Urochloa jaliscana (J. Santana) Espejo & López-Ferrari (JAL, MÉX).
+Urochloa maxima (Jacq.) R.D. Webster (CAM, NAY, PUE, YUC).
*Urochloa meziana (Hitchc.) Morrone & Zuloaga (AGS, CHIH, COAH, COL, CDM, DGO, GTO, HGO, JAL, MÉX, MICH, NL, OAX, PUE, QRO, SLP, TAM, VER, ZAC).
Urochloa mollis (Sw.) Morrone & Zuloaga (CAM, CHIS, COL, GRO, MÉX, NAY, OAX, PUE, SIN, VER, YUC).
+Urochloa mutica (Forssk.) T.Q. Nguyen (BC, BCS, CAM, CHIS, COL, GRO, HGO, JAL, MÉX, MICH, NAY, OAX, PUE, QROO, SLP, TAB, TAM, VER, YUC).
*Urochloa ophryodes (Chase) Morrone & Zuloaga (NL, SLP, TAM).
+Urochloa panicoides P. Beauv. (AGS, JAL, MICH).
Urochloa plantaginea (Link) R.D. Webster (AGS, CHIH, CHIS, COL, DGO, GTO, GRO, JAL, MÉX, MICH, MOR, NAY, OAX, PUE, QRO, SLP, TAM, VER, ZAC).
Urochloa platyphylla (Munro ex C. Wright) R.D. Webster (OAX).
Urochloa reptans (L.) Stapf (CAM, CHIS, COL, GRO, JAL, MICH, MOR, NAY, NL, OAX, PUE, SLP, SIN, SON, TAM, VER, YUC).
Urochloa texana (Buckley) R.D. Webster (CHIH, COAH, DGO, NAY, NL, TAM, ZAC).
**Urochloa venosa (Swallen) Morrone & Zuloaga (MICH).
Vulpia (4/0/0/2; Pooideae)
+Vulpia bromoides (L.) Gray (BC, BCS, CHIS, CDM, MÉX, MICH, OAX, PUE, VER).
Vulpia microstachys (Nutt.) Munro
Vulpia microstachys var. ciliata (Gray) Lonard & Gould (BC).
Vulpia microstachys var. pauciflora (Scribn. ex Beal) Lonard & Gould (BC, BCS).
+Vulpia myuros (L.) C.C. Gmel., Fl. Bad. 1: 8. 1805.
+Vulpia myuros var. hirsuta Hack. (BC, CHIH, CHIS, COAH, DGO, HGO, MÉX, MICH, MOR, OAX, PUE, SLP, SON, ZAC).
+Vulpia myuros var. megalura (Nutt.) Auquier (BCS).
Vulpia myuros (L.) C.C. Gmel. var. myuros (BC).
Vulpia octoflora (Walter) Rydb.
Vulpia octoflora var. glauca (Nutt.) Fernald (BC).
Vulpia octoflora var. hirtella (Piper) Henrard (BC, BCS).
Vulpia octoflora (Walter) Rydb. var. octoflora (BC, BCS).
Zea (4/2/0/0; Panicoideae)
*Zea diploperennis H.H. Iltis, Doebley & R. Guzmán (JAL, VER).
Zea luxurians (DGOieu & Asch.) R.M. Bird (CHIS, OAX).
Zea mays L.
Zea mays L. subsp. mays (AGS, BC, BCS, CAM, CHIH, CHIS, COAH, COL, CDM, DGO, GTO, GRO, HGO, JAL, MEX, MICH, MOR, NAY, NL, OAX, PUE, QRO, QROO, SLP, SIN, SON, TAB, TAM, TLX, VER, YUC, ZAC).
*Zea mays subsp. mexicana (Schrad.) H. H. Iltis (CHIH, CDM, DGO, GTO, GRO, JAL, MÉX, MICH, N.L., OAX, PUE, QRO).
Zea mays subsp. parviglumis H.H. Iltis & Doebley (GRO, JAL, MÉX, MICH).
*Zea perennis (Hitchc.) Reeves & Mangelsd. (JAL, MÉX, MICH).
Zeugites (9/4/2/0; Panicoideae)
Zeugites americanus Willd.
Zeugites americanus Willd. var. americanus (CAM, YUC).
Zeugites americanus var. mexicanus (Kunth) McVaugh (CHIS, COL, GRO, HGO, JAL, MICH, NAY, OAX, PUE, SLP, TAM, VER).
Zeugites americanus var. pringlei (Scribn.) McVaugh (CHIS, GRO, JAL, MÉX, MICH, MOR, OAX, PUE).
*Zeugites capillaris (Hitchc.) Swallen (COL, GRO, JAL, MÉX, VER).
*Zeugites hackelii Swallen (JAL, MICH, SIN).
**Zeugites hintonii T.G. Hartley (MÉX).
*Zeugites latifolius (E. Fourn.) Hemsl. (CHIS, GRO, JAL, OAX).
Zeugites munroanus Hemsl., Biol. Cent.-Amer. (CHIS, VER).
Zeugites pittieri Hack. (CHIS).
**Zeugites sagittatus Hartley (MÉX).
*Zeugites smilacifolius Scribn. (GRO, JAL, MÉX, MICH, MOR).
Zizaniopsis (1/0/0/0; Oryzoideae)
Zizaniopsis miliacea (Michx.) Döll & Asch. (CHIS, VER).
Zoysia (1/0/0/1; Chloridoideae)
+Zoysia matrella (L.) Merr. (NAY).
Zuloagaea (1/0/0/0; Panicoideae)
Zuloagaea bulbosa (Kunth) Bess (CHIH, COAH, DGO, GRO, JAL, MOR, SON, VER).