粗毛杨桐 cu mao yang tong

Shrubs or trees, 3-15(-25) m tall. Current year branchlets densely brown to ferruginous spreading hirsute, indumentum ± persistent; terminal buds densely brown to ferruginous hirsute. Petiole 5-7 mm, ferruginous hirsute; leaf blade oblong-elliptic to elliptic, 9-12.5(-16) × 3-4.5(-5.8) cm, leathery, abaxially yellowish green, densely grayish brown to ferruginous hirsute with trichomes projecting beyond margin, and becoming brown when dry, adaxially green to yellowish green and glabrous, midvein abaxially elevated and adaxially impressed, secondary veins 10-13 on each side of midvein and raised on both surfaces, base broadly cuneate, margin entire and densely hirsute, apex acuminate. Flowers axillary, solitary or to 3 in a cluster. Pedicel 5-6 mm, hirsute; bracteoles persistent, ovate to broadly ovate, 4-10 × 3-5 mm, outside hirtellous, apex acute. Sepals ovate to long ovate, 8-11 × 3.5-5 mm, outside densely yellowish brown hirtellous, inside glabrous, apex acute. Petals white, long ovate to ovate-lanceolate, 10-12 × 4-5 mm, outside glabrous. Stamens 30-35, 8-9 mm; filaments 4-5 mm, pubescent, basally adnate to petals; anthers linear, 3-4 mm, with filiform trichomes, connective exserted. Ovary densely hirtellous, 3-loculed with many ovules per locule; style 8-10 mm, completely united, hirtellous, only basally hirtellous, or glabrous. Fruit globose, ca. 8 mm in diam., densely hirtellous. Fl. Apr-May, fr. Jul-Aug.

● Forests on mountain slopes or in valleys; 400-1900 m. SW Guangdong, E, N, and SW Guangxi, SE Guizhou, SE Yunnan.