Monographs Details: Styrax rigidifolius Idrobo & R.E.Schult.
Authority: Maguire, Bassett. 1978. The botany of the Guayana Highland--part X. Mem. New York Bot. Gard. 29: 1-288.
Discussion:6. Styrax rigidifolius Jesus Idrobo & R. E. Schultes, Bot. Mus. Leafl. Harvard 13(10): 325-329. 1949. Type. "Low shrub. Flowers: petals white, recurved, anthers yellow. Fruit cupped, green." Comisaria del Vaupes, Macaya-Ajaju River confluence. Mount Chiribiquete. Quartzite base. Summit 800-1200 feet above forest floor; 1700-2100 feet above sea-level. Colombia. 15-16 May 1943, Richard Evans Schultes 5468 (holotype US, isotype COL) (nv).