| Table of contents Bot. sci vol.90 n.4 México Dec. 2012 Structural botany | | | | · Floral morphology and embryology of Begonia gracilis (Begoniaceae): their relevance in the monoecy Chávez-García, Elizabeth; Vázquez-Santana, Sonia
| | | Taxonomy and floristics | | | | · A new and noteworthy species of Dioscorea (Dioscoreaceae) from Michoacán, Mexico Ramírez-Amezcua, Yocupitzia; Téllez, Oswaldo; Steinmann, Victor Werner
| | | | · Neotypification of Hechia lanata (Bromeliaceae; Hechtioideae), an endemic species from Oaxaca, México Espejo-Serna, Adolfo; López-Ferrari, Ana Rosa; Ceja-Romero, Jacqueline; Mendoza-Ruiz, Aniceto
| | | | · The genus Ficus L. (Moraceae) in Mexico Ibarra-Manríquez, Guillermo; Cornejo-Tenorio, Guadalupe; González-Castañeda, Nahú; Piedra-Malagón, Eva María; Luna, Albino
| | | Ecology | | | | · Slope orientation effect in population structure and ecomorphology of Neobuxbaumia tetetzo (Cactaceae) López-Gómez, Víctor; Zedillo-Avelleyra, Paulina; Anaya-Hong, Soonyoo; González-Lozada, Enrique; Cano-Santana, Zenón
| | | | · Dynamics of Phragmites autralis and Schoenoplectus americanus in response to the addition of phosphorus and nitrogen in experimental wetlands Escutia-Lara, Yazmín; Lindig-Cisneros, Roberto
| | | | · Effect of pertubation in the native and ruderal herbs community in a Mexican dry forest de la O-Toris, Jessica; Maldonado, Belinda; Martínez-Garza, Cristina
| | | In memoriam | | | | · Magdalena Josefina Peña Muñoz Linares, Edelmira
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