Woods., Ann. Missouri Bot. Gard. 27:333,f. 1. 1940
Vine; stems and leaves sparsely pilose. Leaves opposite; petioles slender, 2-4 cm long; blades ovate-oblong, acuminate, deeply cordate at base, 5-10 cm long, 2-4 cm wide, with 2 or 3 minute, fingerlike glands at base of midrib. Flowers 2-4 in axillary, pedunculate clusters, 5-parted, 2-3 cm diam; peduncles 1-2 cm long; pedicels 2-3 cm long; calyx lobes linear-lanceolate, ca 7 (10) cm long, sparsely pilose outside; corolla greenish, lobed to below middle, the lobes ovate-lanceolate, 1-2 cm long; outer corona fleshy, the margin bearded. Follicles unknown. Wetmore & Abbe 202.
Collected once on BCI, but not seen in recent years. This specimen had flowers in January.
Known only from Panama. The type is from premontane wet forest in Coclé (El Valle); the species is known also from tropical moist forest on BCI and from tropical wet forest in Panama.