ABSTRACT
Oncidiinae is the second largest subtribe of the orchids in the Americas. According to the Brazilian database Lista de Espécies da Flora do Brasil, the representativity of the subtribe in Distrito Federal is of 15 genera and 19 species. The objective of this study was to develop a taxonomic treatment of the subtribe for the Flora of Distrito Federal, Brazil. Field trips, consultations to the herbaria BHCB, CEN, HEPH, IBGE, and UB and morphological analysis of all the material were made. A new occurrence of species and genus, Trichopilia brasiliensis Cong., was registered to Distrito Federal After this study, the taxa list for Oncidiinae of Distrito Federal should be corrected to 15 genera and 18 species. Descriptions, identification keys, and illustrations for taxa were prepared. We concluded that some species of Oncidiinae occurring in Distrito Federal have wide distribution while others are locally rare and require intense effort of collection for registration.
Brasília; floristics; morphology; orchids; taxonomy
