Monographs Details: Syngonanthus phelpsae var. pilosus Moldenke
Authority: Maguire, Bassett & Wurdack, John J. 1957. The Botany of the Guiana Highland -- Part II. Mem. New York Bot. Gard. 9 (3): 235-392.
Description:Latin Diagnosis - Haec varietas a forma typica speciei foliis dense adpresso-pilosis recedit.
Species Description - This variety differs from the typical form of the species in having the leaves densely appressed-pilose with silvery hairs.
TYPE: Bassett Maguire, John J. Wurdack, & George S. Bunting 37308 on the west escarpment savanna 4-8 km south of Cumbre Camp, alt. of 1850-1900 m on the summit of Cerro de la Neblina, Rio Yatua, Amazonas, Venezuela, January 15, 1954, New York Botanical Garden. The collectors report that the plants were abundant, forming cushions, but had only old flowers on that date.