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The Harvard University Herbaria, with more than 5 million specimens, are one of the 10 largest Herbaria in the world in number of specimens, and along with the library, form the world's largest ...

The genus Barkeria (Orchidaceae) consists of four species and eight subspecies (the treatment includes a key) of epiphytic plants endemic to Mexico and Central America. Barkeria is separated from the ...

- large and variable genus of terrestrial or epiphytic or lithophytic orchids of tropical and subtropical Americas; some native to United States ...