Osa pulchra

Species of plant

Osa pulchra is a species of rare flowering plant in the monotypic genus Osa, belonging to the family Rubiaceae. There are only two known populations in Costa Rica, with less than a total of thirty individual plants and a small population in Panama. The genus name is derived from that of the Osa Peninsula in southwestern Costa Rica. The plant is a shrub or small tree and has been cultivated in several botanical gardens, including Kew Gardens, the New York Botanical Garden, and the Huntington Botanical Garden.

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