- 1-4 m treelet, shade tolerant
- paired glabrous leaves
- twigs with fine ridges
- inflorescences arising between nodes
Description: A shrub or treelet mature at 1-4 m; twigs slender with petiole ridges continuing onto twigs forming narrow keels that border the entire internode; petioles to 1 cm, leaves to 7 x 16 cm, mostly paired, glabrous, weakly bullate, elliptic to ovate, apex acuminate, base acute, minor leaf ovate, 15-20% as long as major leaf; inflorescence arising on internode, but closer to upper node, peduncle slender and pendant; flower with corolla pale green, the lobes with canoe-shaped tips, anthers yellow; fruit to 1.5 cm, globose, becoming yellow-green when mature.
Local distribution: Cloud forest on both slopes; less commonly in Pacific slope wet forest, especially along streams.
Species range: Nicaragua to Costa Rica
Habitat: Light gaps and partly shaded forest edges, stream margins, and roadsides.
Phenology: Flower: mar, may-jun. Fruit: sep-nov?.
Seed dispersers: Bats?
Comments: This shade tolerant species is distinctive in its slender zig-zag twigs, slender inflorescences, and knob-like calyx lobes.