Abstract
A taxonomic revision is provided for Cordiaceae (Boraginales) in Mexico and Central America and the adjacent portions of the United States, including 44 species of Cordia and 17 species of Varronia. Eight of the 44 species of Cordia were described as new to science elsewhere in earlier parts of this study. Cordiaceae are distinguished from other families of Boraginales in being erect woody plants with a style that is twice-divided with four stigmas. Taxonomic history of generic delimitation in the Cordiaceae is presented, along with discussions of morphology of Cordia and Varronia, an overview of breeding systems in the family, provisional conservation assessments, infrageneric classification, keys to species, and descriptions, with complete nomenclature and notes on geographic distribution and how to recognize individual species.
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