白叶桐 bai ye tong

Adisca albicans Blume, Bijdr. 611. 1826; Doryxylon albicans (Blume) N. P. Balakrishnan; Sumbavia macrophylla Müller Argoviensis.

Trees, 5-8 m tall; branchlets white- or ochraceous tomentulose when young. Petiole 3-8 cm; leaf blade ovate-oblong to oblong, 10-30 × 5-15 cm, thickly papery, abaxially white- or ochraceous tomentulose, adaxially glabrous, base obtuse, narrowly peltate, apex acuminate or acute. Racemes 6-30 cm, tomentulose; bracts subovate, 2.5-3 mm. Male flowers 2- or 3-fascicled; pedicels 4-5 mm; calyx 5-lobed, ca. 5 mm, stellate-tomentose; petals obovate, 2.5-3 mm; disk absent; stamens 50-70. Female flowers: sepals ovate-oblong or lanceolate, ca. 3 mm, stellate-tomentose; ovary stellate-tomentose; styles 3, 2-3 mm. Fruiting pedicels ca. 1 cm; capsule 2.5-3 cm in diam., ochraceous tomentose. Seeds subglobose, 1.2-1.4 cm in diam., marbled. Fl. and fr. Mar-Dec.

Forested limestone valleys and hills; 400-900 m. S Yunnan [NE India, Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam].