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Three new species of Prestonia subgenus Prestonia, P. cogolloi, P. premontana and P. racemosa , from Colombia, Venezuela and Peru, respectively, are described and illustrated, and their relationships with related taxa discussed, including distribution, phenology, additional specimens examined and a key of the group.

Studies on Neotropical Apocynaceae XXXII: three new species of <i>Prestonia</i> (Apocynoideae, Echiteae) for South America