Polianthes geminiflora (Lex.) Rose (Agavaceae) is neotypified and its detailed description is presented. This species was described by Juan José Martínez de Lexarza as Bravoa geminiflora and published in Novorum vegetabilium descriptiones in 1824. According to Lexarza, the plant was…

We present results of the study on benthic marine algae in eight localities from the coast of Campeche, Mexico. The results indicate the presence of 211 taxa of marine algae with Rhodophyta having the greatest diversity with 102 taxa, followed…

Mexico is the main center of diversity of the genus Quercus in the Western Hemisphere. Despite recent advances in the knowledge of Mexican oaks, a degree of taxonomic confusion still remains, mainly within particular species complexes. In this study, scanning…

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It is pointed out that the newly described Phoradendron perredactum Rzedowski & Calderón exhibits an advanced type of growth behavior (isophasic parasitism) that also occurs inthree other, unrelated groups of parasitic flowering plants.

Epidendrum madrense, traditionally treated under the synonymy of Prosthechea chacaoensis, is recognized as a distinct species and transferred to Prosthechea. The number, length, and shape of the nectar guides on the labellum are useful taxonomic characters to distinguish closely related…

The name Didymaea alsinoides (Schltdl. & Cham.) Standl. has been incorrectly applied to a common and wide-ranging Mexican and Central American species whose correct identity is Didymaea Mexicana Hook. f. In this paper a lectotype is selected and designated for…

A new species, Hypoxis colliculata from Oaxaca and Chiapas, México is presented here. It belongs to the group with black seeds and is separated from the other species by the colliculate sculpturing of the seeds.

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