Monographs Details: Pseudephedranthus fragrans (R.E.Fr.) Aristeg.
Authority: Maguire, Bassett. 1969. The botany of the Guayana Highland-part VIII. Mem. New York Bot. Gard. 18: 1-290.

Ephedranthus fragrans R. E. Fries, Mem. N. Y. Bot. Gard. 9: 327. 1957.

Type. V E N E Z U E L A . Rio Negro, occasional on lower slopes of Piedra Nunca (just north of Piedra Cucuy), B. Maguire & J. J. Wurdack 34954 (male plant). Other collections. BRAZIL. Amazonas: Serra da Neblina, Rio Negro, Rio Cauaburi, Maguire, Steyermark & Maguire 60191 (fruiting plant); 60189 (male plant). Silva & Brazdo 60683 (hermaphroditic plant); 60738 (fruiting plant).