Monographs Details: Conceveiba magnifica Steyerm.
Authority: Maguire, Bassett. 1967. The botany of the Guayana Highland--Part VII. Mem. New York Bot. Gard. 17: 1-439.
Family:Euphorbiaceae
Description:Distribution and Ecology - Known only from the type.

Discussion:

Type. Municipality Sao Paulo de Olivenca; basin of creek Belem, State of Amazonas, Brazil, 26 Oct-11 Dec 1936, B. A. Krukoff 8698 (female NY).

Differs from the other species in its very densely tomentose ovary, much larger and membranaceous leaves and in the lack of glands at the base of sepals" (Steyermark).