| Table of contents Act. Bot. Mex n.92 Pátzcuaro Jul. 2010 Hypoxis colliculata (Hypoxidaceae), a new species from Mexico and a key to the American species with black seeds Sánchez-Ken, J. Gabriel
| | Reassessment of the extinction risk of five species of the genus Polianthes L. (Agavaceae) Feria-Arroyo, Teresa Patricia; Solano, Eloy; García-Mendoza, Abisaí
| | Morphological variation of the genus Prochnyanthes (Agavaceae) Castro-Castro, Arturo; Rodríguez, Aarón; Vargas-Amado, Georgina; Ramírez-Delgadillo, Raymundo
| | Flora of the central part of the State of Chihuahua, Mexico Estrada-Castillón, Eduardo; Villarreal-Quintanilla, José Ángel
| | A new species of Bursera (Burseraceae), endemic to the lower basin of the Balsas River in the States of Michoacan and Guerrero, Mexico Guevara-Féfer, Fernando
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