Taxonomy of Mexican Podostemaceae

A taxonomic treatment of Podostemaceae in Mexico is presented, based on herbarium study and extensive field collections. Five genera and eight species of Podostemaceae (including Tristichaceae) occur in Mexico: Marathrum Humb. & Bonpl. (M. rubrum Novelo & Philbrick, M. schiedeanum (Cham.) Tu...

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Bibliographic Details
Published in:Aquatic botany 1997-06, Vol.57 (1-4), p.275-303
Main Authors: Alejandro Novelo, R., Philbrick, C.Thomas
Format: Article
Language:English
Subjects:
Aquatic plants
Freshwater
Marathrum
Mexico
Oserya
Podostemaceae
Podostemum
River-weeds
Taxonomy
Tristicha
Vanroyenella
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Summary:A taxonomic treatment of Podostemaceae in Mexico is presented, based on herbarium study and extensive field collections. Five genera and eight species of Podostemaceae (including Tristichaceae) occur in Mexico: Marathrum Humb. & Bonpl. (M. rubrum Novelo & Philbrick, M. schiedeanum (Cham.) Tul., M. tenue Liebm.), Oserya Tul. & Wedd. (O. coulteriana Tul., O. longifolia Novelo & Philbrick), Podostemum Michx. (P. ricciiforme (Liebm.) P. Royen), Tristicha Du Petit-Thouars (T. trifaria (Bory ex Willd.) Spreng.) and Vanroyenella Novelo and Philbrick (V. plumosa Novelo & Philbrick). More species occur on the Pacific slope (especially the states of Jalisco, Michoacan and Guerrero) than the Atlantic slope. In Mexico, Podostemaceae occur predominantly in three main climate types (A, hot and humid; B, dry; C, temperate and humid), and eight Mexican physiographic provinces. Podostemaceae are found primarily in river rapids that occur in the following vegetation types: oak-pine forest, moist mountain forest, tropical rain forest, tropical subdeciduous forest and tropical deciduous forest.
ISSN:0304-3770
1879-1522
DOI:10.1016/S0304-3770(96)01122-9