Dressler, R. L. & F. Pupulin. 2008. The identity of Sobralia leucoxantha, with three new species, two closely allied an one more distant. Orquideología 25(2): 152-158.

Abstract: Sobralia blancoi and S. pendula are both close allies of S. leucoxantha. We also describe S. aspera, a species that appears to be more distantly allied.

Key words: Orchidaceae, Sobralia, leucoxantha, blancoi, aspera, pendula, Costa Rica, Colombia

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