Deciduous shrub or small tree, 1.5-7.5 m tall. Petioles 3-15 mm long; blades +/- elliptic to oblong-obovate, variable but usually blunt-acuminate at apex, narrowed to an obtuse to subcordate base, 6-16 cm long, 3.5-5.5 cm wide, conspicuously pellucid-punctate and pellucid-lineate, glabrous above, glabrous to puberulent below, minutely serrulate to crenulate-serrate. Corymbs axillary, cymose; pedicels to 6 mm long, articulated below middle; flowers white or greenish; calyx ca 5 mm long, 5-lobed; corolla lacking; stamens 8, ca 3 mm. long; filaments villous; anthers introrse; staminodia densely pubescent, one-third to one-half as long as stamens; ovary sparsely pilose; stigma +/- globose, held at level of anthers. Capsules globose to ellipsoid, with usually 3 longitudinal ridges, to 1.5 cm long, glabrous, orange to red at maturity; seeds 1-3, +/- ovoid, to 7 mm long, covered with resinous glands, with an incomplete red aril. Reported by Standley (1933); the species could not easily be confused by him with any other, but I have not seen any collections from the island. Elsewhere in Panama, flowers commonly in the late dry season and early rainy season (April and May). The fruits are mature in the late rainy and early dry seasons. Leaves fall in the dry season and grow in again at the time of flowering. The species has been confused with Casearia nitida (L.) Jacq. in the Flora of Panama (Robyns, 1968) and elsewhere. As indicated by Adams (1972), Casearia nitida occurs only in the West Indies and is distinct from C. corymbosa.