Shrub or small tree to 10 m. tall; young stems, petioles, and inflorescence nearly or quite glabrous; petioles slender, 1.5-3 cm. long; leaf-blades thin, narrowly oblong-elliptic, 10-17 cm. long, about a third as wide, long-acuminate, entire or nearly so, broadly cuneate to the base but not decurrent, 3-pli-nerved with an additional pair of marginal nerves, the lateral nerves often alternate, essentially glabrous on both sides; panicles loosely branched, 2-5 cm. long; flowers 4-merous; hypanthium subglobose, about 2 mm. long; exterior teeth minute tubercles or lacking; petals narrowly lanceolate, 3-4 mm. long; fruiting hypanthium with 8 rounded elevated longitudinal ribs.
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