An Orchid Flora of Puerto Rico and the Virgin Islands

by James D. Ackerman 

This title is volume 73 of Memoirs of The New York Botanical Garden. Puerto Rico and the Virgin Islands constitute a single geologic unit known as Greater Puerto Rico. They are also a cohesive biogeographic unit: nearly all the species that occur in the Virgin Islands also occur in Puerto Rico. The author describes 145 species, six of them new, in 65 genera of the Orchidaceae of these islands. Keys to genera and species are in English and Spanish. A checklist and classification of these island orchids are provided.

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