短序白桐树 duan xu bai tong shu

Shrubs, 3-5 m tall, dioecious. Branchlets gray pilose, or glabrous. Stipules lanceolate, 4-5 mm; petiole 4-7 cm, often with 2 glands; leaf blade oblong to broadly lanceolate, 10-17 × 2-5 cm, membranous or thickly papery, adaxially pilose or subglabrous, base cuneate, margin serrulate or sinuous, apex acuminate. Male inflorescences (3-)10-12 cm, pilose; bracts subtriangular, ca. 1 mm. Male flowers 3-5 per bract; pedicel 2-2.5 mm; sepals 3, ca. 3 mm; stamens ca. 27; interstaminal glands ca. 0.5 mm. Female inflorescences 2-3 cm, pilose; peduncle ca. 1 cm. Female flowers few to 9; sepals 3, subtriangular, ca. 1 mm, pubescent; disk 3-lobed; ovary pubescent; styles 3, ca. 1 mm, papillose. Fruiting pedicels ca. 1 mm; capsule 3-lobed, ca. 8 mm, pilose, sutures not raised. Fl. May, fr. Jun-Jul.

Mountain forests; 1500-1800 m. S Yunnan [N Vietnam].