Shrubs or trees to 5 m. tall, the branchlets stout, terete. Leaves palmately compound; leaflets 5 or 6, the blades more or less elliptic-oblong, 15-30 cm. long, (6-) 8-11 cm. broad, cuspidate to acuminate at the apex, obtuse to subcordate at the base, both surfaces glabrous, entire, the costa prominent, the primary lateral veins 7-12 per side, arcuate; petioles to 32 cm. long, lenticellate, the ligule oblong-linear, to 11 cm. long, the petiolules 2-8 cm. long, subterete, somewhat swollen proximally and distally. Inflorescences of racemosely arranged cymes on a terminal panicle, ferrugineous-puberulent, the primary peduncle plus rhachis to 15 cm. long, the secondary peduncles and rhachises about 12, to 50 cm. long, subtended by an oblong-linear bract to 3.5 cm. long, the floriferous peduncles many, 7-10 mm. long, subtended by a bract to 1 mm. long; pedicels 3.0-4.5 mm. long. Flowers 7-14 per umbel; calyx cupuliform, about 0.5 mm. long, the limb minutely denticulate; petals about 2 mm. long, connate and calyptrate; filaments 1.5-2.0 mm. long, the anthers approximately 1 mm. long, 0.75 mm. broad; styles 5, free at the apex.
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