Monographs Details: Philacra
Authority: Maguire, Bassett & Wurdack, John J. 1961. The botany of the Guayana Highland--part IV (2). Mem. New York Bot. Gard. 10: 1-87.
Scientific Name:Philacra

Dwyer (I.e.) removed from the genus Luxemburgia two species, then known only by specimens collected by Tate on Cerro Duida in Amazonian Venezuela, and placed them together with a third, P. auriculata Dwyer, which he knew only from specimens collected by Holt and Blake in the relatively nearby Amazonian Brazil, in his new genus Philacra.

Our own field studies extend the knoYTi range of P. longifolia to Cerros Sipapo (Maguire & Politi 28360-A), to Cerro Paru (Gowan & Wurdack 31071 and 31341), and to Cerro Huachamacari (Maguire, Gowan & Wurdack 29877 and 30323), all in Amazonas, Venezuela, north of Cerro Duida. For the first time, P. auriculata Dwyer is known from Venezuela, this attractive goldenflowered shrub occurring frequently in peripheral regions of the upper montane forests of Cerro Neblina, lying some one hundred miles to the northwestward of the original locality: Maguire, Wurdack & Bunting 37265, and Maguire, Wurdack & Maguire 42035, 42135 and 42187.