Monographs Details: Clusia columnaris Engl.
Authority: Maguire, Bassett & Wurdack, John J. 1961. The botany of the Guayana Highland--part IV (2). Mem. New York Bot. Gard. 10: 1-87.
Family:Clusiaceae
Scientific Name:Clusia columnaris Engl.
Description:Distribution and Ecology - C. columnaris is widespread and somewhat variable in riparian and savanna and rock outcrop ecotone habitats in the basin of the Alto Orinoco, the Rio Negro, and the Magdalena. The review of some 100 sheets at The New York Botanical Garden has failed to demonstrate any clearcut geographic or ecologic varietal segregation.Cuatrecasas (Rev. Acad. Colomb. Ci. 8: 41. 1950) has described two varieties, viz.: C. columnaris Engl. var. magdalenenis Cuatr. from the Magdalena Valley, Colombia, Haught 1366 (holotype F, isotype NY); and C. columnaris Engl. var. vaupesana Cuatr., from Circasia, Rio Vaupes, Colombia, Cuatrecasas 7166A (holotype, F); and Rio Guavabero, Cuairecasas 7555 (paratype, F). We have not been able to study sufficiently adequate series of specimens from these areas to enable us to make a critical judgment on the distinctness of these varieties.

Discussion:

Type: in fissuris rupium ad San Gabriel do Cachoeira ad Rio Negro, provincia do Alto Amazonas, Spruce 1980 (G, two sheets; K; M; photos at NY.)

Distribution:Venezuela South America|