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Description:
Andromonoecious shrubs or treelets 1.5-4 m tall. Leaves (25–)40–75(–90) cm long; leaflets 9–15, dark green above, paler beneath, or often variegated yellow, especially when exposed to much sunlight, papyraceous, elliptic to lanceolate or ovate, often narrowly so, (9–)12–30(–34) × (2–)3–10 cm (somewhat smaller in juvenile foliage), the apex acuminate or acute to obtuse, often minutely mucronate, the margin entire to coarsely crenate, often with minute, widely spaced teeth rarely exceeding 1(–4.5) mm long (to deeply pinnatifid in juvenile foliage), minutely revolute, the base obtuse to attenuate (occasionally truncate), often slightly oblique; petiolules 0.5–2.5(–3) cm long; rachis articulated at petiolule bases; petiole (8–)10–20 cm long, slightly enlarged and clasping at the sparsely lenticellate base, evidently alate for (3–)3.5–4.5 cm with membranous wings. Inflorescence terminal, pendent, glabrous throughout, the primary axis ca. 15–30 cm long, the secondary axes 5–7, usually in verticils, (22–)30–-80(–140) cm long, tertiary axes ca. (10–)15–25 per secondary axis, mostly grouped in 2–4(5) verticils, each (4–)6–14 cm long at maturity, subtended by a subcoriaceous, adaxially concave, lanceolate-subulate, acuminate bractlet 3–6 mm long, and bearing either a terminal umbellule of protandrous, hermaphroditic flowers and 2–4(–6) paired lateral umbellules of staminate flowers, or further divided into ca. 10–15 fourth-order axes each bearing a terminal umbellule of hermaphroditic or staminate flowers and 2–4 paired lateral, staminate umbellules (these often apparently abortive), the staminate umbellules each subtented by a small, subulate bractlet ca. 1–2 mm long, the peduncles 0.5–2.5 cm long, each bearing ca. 10–25 flowers per umbellule (occasionally fewer in staminate umbellules), the pedicels 4–8 mm long (shorter in staminate flowers). Calyx broadly cupuliform, 0.4–0.6 mm high, the rim undulate and (4–)5(–6)-toothed, hyaline. Corolla oblong-elliptic to obovoid in bud, greenish or occasionally tinged brownish or purple, the petals (4–)5(–6), spreading to recurved at anthesis, ovate-lanceolate, 2.5–3.5 mm long (some-what smaller in staminate flowers). Stamens as many as petals, the filaments 1–1.4mm long, the anthers cream white, 1–1.6 mm long. Ovary (2–)3–5-carpellate, urniform or obtriangular to subinfundibuliform, 0.8–1.4 mm high at anthesis; styles as many as carpels, free nearly to the base, 1–1.4mm long at anthesis, diverging as they become receptive and expanding slightly in fruit to 1.7 mm long. Mature fruit subglobose to widely Ovoid, 3–4 (–5) mm high, ribbed when dry, the base often shallowly cordate.
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