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Description:
Dioecious trees 12–c. 20 m tall, sparsely to well branched. Leaves once-pinnate, up to c. 100 cm long; leaflets 23–33, lamina green to slightly dark-green (shiny when fresh, dull upon drying), somewhat paler below, membranous to papyraceous, ovate to narrowly ovate, 4.3–15 × 2–6 cm, the apex narrowly actute to acuminate, the margin entire to irregularly undulate or with a few large, shallow teeth toward the base, slightly thickened and minutely revolute, especially in the basal half, the base asymmetrical, truncate-rounded to acute or subcordate, strongly oblique; petiolules 1–15 mm long; rachis articulated at insertion of leaflets, glabrous to weakly puberulent; petiole 14–21 cm long, 4.5–r cm mm diam., glabrous to scarcely puberulent (to densely puberulent on the adaxial side of the petiole base), without an alate base. Inflorescence a panicle of umbellules, terminal, erect, cylindrical to obpyramidal, the axes densely puberulent; the bractlets caducous; the primary axis 10–22 cm long; the secondary axes c. 15–20, scattered and alternate, 5–29 cm long; the tertiary axes (peduncles) 8–30 per secondary axis, 3–15 mm long; alternate to clustered in pseudoverticels, umbellules of 7–14 terminal flowers and 0–2 lateral flowers (usually 1 or 2 lateral scars evident); bractlets caducous; pedicels 1.8–5.5 mm long, slender (≤0.6 mm diam.). Calyx forming a very low collar, 0.2–0.3 mm tall, rim undulate and with or without minute apiculate teeth. Petals and stamens unknown. Ovary 2- (or 3-)-carpellate; styles 2 (or 3), free nearly to the base, erect to divergent just after anthesis, 0.8–2 mm long, recurved in fruit. Mature fruit laterally compressed (rarely triangular with the faces somewhat concave when 3-carpellate), orbicular to widely ellipsoid, 3.5–5.5 (–6) × 4–4.5 mm, glabrous, the base rounded to very shallowly subcordate, the ribs weakly developed when dry.
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