| Table of contents Act. Bot. Mex n.90 Pátzcuaro Jan. 2010 Semblanza: Miguel Ángel Soto Arenas (1963-2009) Pérez García, Eduardo A.; Hágsater, Eric
| | Semblanza: Laura Blanca Arriaga Cabrera (1956-2009) Sosa Fernández, Vinicio; Breceda, Aurora; Mendoza, Ana
| | Reunion with Hechtia epigyna Harms (Bromeliaceae) Espejo-Serna, Adolfo; López-Ferrari, Ana Rosa; Zamudio, Sergio
| | Additions to the knowledge of anamorphic fungi in the cloud forest of Veracruz State III Arias, Rosa María; Heredia, Gabriela; Mena-Portales, Julio
| | Euphorbia spellenbergiana (Euphorbiaceae), a new species from Mexico Mayfield, Mark H.; Steinmann, Victor W.
| | Tree fruit traits diversity in the tropical rain forest of Mexico Ibarra-Manríquez, Guillermo; Cornejo-Tenorio, Guadalupe
| | Obtention of intergeneric hybrids Helianthus annuus x Tithonia rotundifolia and their morphological and molecular analysis Luévanos-Escareño, Miriam Paulina; Reyes-Valdés, M. Humberto; Villarreal-Quintanilla, José Ángel; Rodríguez-Herrera, Raúl
| | Two new species of Perymenium (Compositae-Heliantheae) from the arid part of the state of Queretaro (Mexico) Rzedowski, Jerzy; Calderón de Rzedowski, Graciela
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