Estudios sobre Rubiáceas Mexicanas XXVIII. El género Coussarea Aubl. (Coussareae) en México con dos especies nuevas

Borhidi, A. (2010) Estudios sobre Rubiáceas Mexicanas XXVIII. El género Coussarea Aubl. (Coussareae) en México con dos especies nuevas. Acta Botanica Hungarica, 52 (1-2). pp. 67-76. ISSN 0236-6495

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Abstract

Coussarea is a neotropical genus including over 100 species of trees and shrubs. In the flora of Mexico it has been represented by a unique species, C. mexicana . Recently two new species appeared from collections made in Chiapas and Oaxaca states, which have two characters uncommon in the genus, namely the C. chiapensis has 5-merous flowers and the C. rafa-torresii has unisexual dioiceous flowers, while the overwhelming majority of the Coussarea species has bisexual, 4-merous flowers. Therefore it turned to be necessary to modify the generic description.

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