Monographs Details: Senefelderopsis sipapoensis Jabl.
Authority: Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.
Family:Euphorbiaceae
Description:Latin Diagnosis - Lamina obovata, apice rotundato basi cuneata, biglandulosa, in siceo subtus albo-grisea. Spica multicymulosa, cymuli 36-40 vel plures, 5-8 cm longitudine. Cymuli pauciflori, flores 4 pro cymulo. Stamina vulgo 2 rariter 4. Glandulae bractearum cymulos fultantiarum elliptico-discoideae, magnitude bractearum aequantiae vel paulisper eas superantiae. Flores 5 fructusque ignoti. Differt a S. chiribiquctensi, cui similis, foliorum forma, staminarum numero, magnitudine glandularum cymuligerum.

Distribution and Ecology - Distribution. Known only from the type locality.