Karremans, A. P. 2009. Prosthechea madrensis, a reconsideration of Epidendrum madrense Schltr. (Orchidaceae: Laeliinae). Acta Botanica Mexicana 88: 47-57.

Abstract: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 species in Prosthechea.

Key words: Laeliinae, Mesoamerica, Orchidaceae, Prosthechea madrensis.

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