思茅厚皮香 si mao hou pi xiang

Shrubs or trees, 2-10 m tall. Young branches grayish brown; current year branchlets purplish brown, glabrous. Petiole 1-1.5 cm, glabrous, adaxially grooved; leaf blade oblong to obovate-oblong, 6-9.5 × 2.5-3.5 cm, thinly leathery, abaxially pale green becoming pale brown or reddish brown when dry, adaxially dark green and shiny, both surfaces glabrous, midvein abaxially elevated and adaxially impressed, secondary veins 6-9 on each side of midvein and visible to slightly raised on both surfaces, base cuneate to broadly cuneate, margin entire or apically sparsely serrate, apex acute and with an obtuse tip. Flowers axillary, solitary or several clustered on leafless branches. Pedicel 1-1.5 cm. Male flowers: bracteoles triangular to triangular-ovate, ca. 1.5 × 1 mm, margin glandular dentate; sepals broadly elliptic to suborbicular, ca. 3 × 2 mm, margin glandular dentate, apex rounded; petals yellow, broadly obovate to ovate, ca. 5 × 4 mm; stamens 45-50 or more, 2-3.5 mm; anthers ca. 1 mm; pistillode very small. Bisexual flowers: bracteoles, sepals, and petals similar to those of male flowers; stamens ca. 45; ovary ovoid, 2-loculed with 2 ovules per locule; style short, apically 2-parted. Fruit ellipsoid, 10-12 × 7-9 mm, 2-loculed with 1 seed per locule. Seeds obliquely ovoid, ca. 8 × 5 mm. Fl. May-Jun, fr. Oct-Nov.

● Forests on mountain slopes; 700-1800 m. S Yunnan.