Abstract
The genus Pterobesleria Morton, published in 1953, contains two= species, both native to Venezuela. Besleria L. is a genus of over 200 species distributed throughout the neotropics. Conrad Morton's revision of this largest taxon among the American Gesneriaceae, published in 1939, is still a very useful reference, for Besleria is a wen-defined and natural entity. There are very few species in this group with "aberrant" features or special developments, such as the reduced nectary in Besleria comosa Morton, or the cone-shaped berry fruit in B. labiosa Hanstein.
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