Columnea sulfurea Donn.Sm.
no HD illustration available (m1)
Columnea sulfurea Donn.Sm. [Gesneriaceae]
P.C. Standley, J.A. Steyermark, Fl. Guatemala, vol. 10(3,4): : p. 271, fig. 51 (1946-1977) [M. Pahl]