(Loefl.) Stuntz, U.S.D.A. Bur. Pl. Industr. Invent. Seeds 31:86. 1914
C. farinosum H.B.K. Chupachupa
Liana; periderm of older stems sometimes peeling off as fibers. leaves, rachises, and calyces bearing somewhat sunken scales (especially lower leaf surfaces). Leaves opposite; petioles 7-10 mm long; blades ± elliptic, acuminate and mostly falcate at apex, cuneate or rounded at base, 6-12 cm long, 2-6 cm wide, yellowish below owing to golden scales. Panicles terminal or upper-axillary; flowers 4-parted, actinomorphic, pellucid-punctate, yellowish-green or yellow, sessile or subsessile, densely arranged along branches, the branches 1-sided, spikelike, mostly 9-12 cm long; hypanthium (ovary and calyx tube together) ca 1 cm long, the upper part campanulate, golden-scaly; calyx lobes short, acute, exceeding petals; petals minute, yellow; stamens 8, yellowish, 15-20 mm long, subtended by the pilose, funnel-shaped disk; stamens and style folded in bud; anthers shedding some pollen in bud; style unfolding first, equaling or exceeding anthers after anthesis. Fruits more or less orbicular, rounded to emarginate at apex, obtuse to subcordate at base, generally 12-18 mm long, 13-25 mm wide, the wings 4, flexible, to 9 mm wide, reddish-brown to purplish, sparsely covered with dark brown scales. Croat 7947, Hladik 39.
Occasional, on the shore and in the canopy of the forest. Flowers principally from November to January. The fruits mature mostly from January to April.
The flowers produce copious nectar and are frequented by hummingbirds, other small birds, and insects. Loose fallen fruits can be distinguished by being four-winged and conspicuously lepidote.
Mexico to Argentina. In Panama, ecologically variable; known from tropical moist forest in the Canal Zone, Veraguas, Herrera, Panama, and Darien, from premontane dry forest in Panama, from tropical dry forest in Herrera, Coclé, and Panama, from premontane moist forest in the Canal Zone, Los Santos, and Panama, and from premontane wet forest in Veraguas and Panama.
See Fig. 418.