Shrubs or trees to 13 m. tall, sometimes epiphytic, the young parts cinereo-puberulent, becoming glabrous, the branchlets stout, terete. Leaves palmately compound, 8-21 leaflets, the blades oblong-lanceolate, 8-30 cm. long, 4-11 cm. broad, caudate-acuminate at the apex, obtuse to rounded at the base, undulate, the costa prominulous, the primary lateral veins 8-20 per side; petioles to 55 cm. long, sheathing at the base, lenticellate, the ligule oblong-lanceolate, to 9 cm. long, the petiolules 2-20 cm. long. Inflorescences with heads borne racemosely in a large terminal panicle, the primary peduncle about 1 cm. long, the primary rhachis 10-15 cm. long or longer, the secondary peduncles 1-2 cm. long, the secondary rhachises to 50 cm. long, the floriferous peduncles 0.5-1.0 cm. long. Flowers 10-20 per head, glabrous; calyx cupuliform, the limb minute, truncate or undulate; petals membranous, connate, deltoid, about 1.5 mm. long; styles connate into a carnose column, free at the apex, the locules and ovules 5. Fruits about 5-15 per head, sharply 5-angled, about 3 mm. in diameter, with a thick stylar column about 1.5 mm. long, the styles shortly free and spreading at the apex.
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