Monographs Details: Tocoyena sprucei Steyerm.
Authority: Maguire, Bassett. 1965. The Botany of the Guayana Highland. Mem. New York Bot. Gard. 12 (3): 1-285.
Description:Species Description - This species has very rugulose reticulately nerved leaves both above and The photo of the type from Kew at U S shows obtuse corolla-buds and obtuse corolla-lobes with a corolla-tube 6.5 cm long, corolla-lobes 6-7 mm long, petioles 4-5 m m long, and leaf-blades 8-8.5 cm long, 6.2-6.5 cm wide, broadly rounded at apex, and obtuse at the base. A specimen from the state of Para, Brazil at NY (Santarém, Froes 20453) is referable to this species.