| Table of contents Act. Bot. Mex n.88 Pátzcuaro Jul. 2009 Manfreda parva (Agavaceae), a new species from the state of Guerrero, Mexico Rodríguez, Aarón
| | Cyst-theca relationships of Gonyaulacales and Peridiniales (Dinophyceae) from Bahía Concepción, Gulf of California Morquecho, Lourdes; Góngora-González, Diana T.; Okolodkov, Yuri B.
| | First record of the epibiont diatom Pseudohimantidium pacificum and other symbiotic associations in the Gulf of California Gárate-Lizárraga, Ismael; Muñetón-Gómez, María del Socorro
| | Prosthechea madrensis, a reconsideration of Epidendrum madrense Schltr. (Orchidaceae: Laeliinae) Karremans, Adam P.
| | Morphogenesis of the gametophytes of eight Mexican species of Blechnum (Blechnaceae) Mendoza-Ruiz, Aniceto; Pérez-García, Blanca
| | Lectotypification of Didymaea mexicana Hook. f (Rubiaceae, Rubieae) and the identity of D. alsinoides (Schltdl. & Cham.) Standl. Lorence, David
| | Notes on Bursera heteresthes (Burseraceae) Rzedowski, Jerzy; Calderón de Rzedowski, Graciela
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