Shrubs or treelets, 1.5-7 m tall. DBH up to 15 cm. Stem usually pricky, rarely inermis, sometime pickles in rows nearly encircling the stem; bark brownish gray or gray. Leaves bipinnate, 70-125 cm long, 50-90 cm wide, with 3-5 pinnae, each 5-15-foliolated, 20-45 cm long; stipules basal or nearly so, narrowly triangular, 1-1.5 cm long; petioles pubescent or becoming nearly glabrescent, umarmed, greenish; rachises subtended with a pair of accessory leaflets, rarely with a pair of 5-foliolated accessory pinnae; leaflets ovate to broadly ovate, sometimes narrowly ovate to lanceolate, chartaceous, 6-15 cm long, 3.5-8.5 cm wide, acute to acuminate at apex, rounded to obtuse, occasionally subcordate at base, serrulate to serrate, lateral veins 7-9 pairs, adaxial surfaces green, slightly rugose, sometimes scabrid, abaxial surfaces glaucous or brownish glaucous, pubescent to densely pubescent, sometimes pilose, pilose on veins, or glabrous, petiolules 0-6 mm long. Inflorescences terminal, 25-55 cm long, 35-80 cm wide, umbellately paniculate, branching in 3 to 4 orders, lacking a main axis or with a very short one, less than 12 cm long, consisting of 5-8 primary branches, each 30-55 cm long, yellowish green when young, turning into pink at fruiting, bracts and bracteoles persistent, secondary bracts lanceolate to triangular, ciliate, 4-10 mm long, bracteoles lanceolate, ciliate, 1.5-2 mm long; umbels 6-15-flowered, pedicels 1-6 mm long, pubescent. Floral buds yellowish green. Flowers greenish white. Sepals minute, triangular to rounded. Petals ovate, 1.8-2.2 mm long. Filaments 2-2.5 mm long; anthers yellowish white, oblong, 0.7-1.2 mm long. Ovary 5-locular; styles distinct. Floral disc projected. Fruit globose to subglobose, ca. 4 mm in diameter, purplish black.
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