Decaspermum glabrum Chang & Miau

This species is known only from type gathering.

Shrubs. Branchlets reddish brown when dry, slender, terete, glabrous. Petiole 3-5 mm, slender, glabrous; leaf blade ovate-lanceolate to lanceolate, 2.5-5 × 1-1.7 cm, stiffly papery, abaxially brown when dry, adaxially shinny black when dry, abaxially densely punctate and glabrous, secondary veins inconspicuous, base cuneate to obtuse, apex acuminate. Inflorescences axillary, dichasia, racemes, or thyrses, 4-9-flowered; peduncle slender, glabrous; bracts leaflike, 6-8 mm. Flowers 4-merous, only staminate known; bracteoles subulate, ca. 2 mm, glabrous. Hypanthium glabrous. Calyx lobes triangular ovate, ca. 1.5 mm, glabrous, apex acute. Petals obovate, 2-2.5 mm, margin sparsely ciliate. Stamens as long as petals. Ovary rudimentary.

● Mountain slopes. SW Guangdong (Zhanjiang Diqu).