Begonia baviensis Gagnep.

Begonia baviensis resembles B. purpureofolia but differs in having green leaves with stiff hairs.

Herbs, rhizomatous, erect, ca. 50 cm tall or more. Rhizomes elongate, to 12 cm in diam. Stems 3-6 mm in diam., scabrous, densely rusty hirsute. Leaves basal and cauline; stipules caducous, triangular, 1.5-2 cm, brown villous; petiole 4-7(-11) cm, densely rusty villous; blade oblate-orbicular or suborbicular, asymmetric, 15-20 × 12-24 cm, both surfaces sparsely red hirsute, more densely so on veins, venation palmate, 6- or 7-veined, base oblique, shallowly cordate, margin remotely denticulate, shallowly lobed to distinctly lobed; lobes 5-7, triangular-ovate to ovate-lanceolate, apex acuminate. Inflorescences densely brown villous; peduncle 10-15 cm; bracts triangular, 5-6 × 4-5 mm, both surfaces and margin villous, apex caudate. Staminate flowers: tepals 4, outer 2 broadly ovate, ca. 1.7 × 1-1.2 cm, outside rusty villous, inner 2 obcordate, ca. 2 × 2 cm, glabrous; stamens numerous; anthers linear; connective extended, acute. Pistillate flowers: tepals 5, unequal, ovate, 1.2-2 cm, abaxially villous; ovary rusty villous, 2-loculed; placentae axile, bilamellate or 4-cleft; styles 2, free; stigmas 2-cleft, spiraled. Capsule nodding, 1.5-1.8 cm × 7-9 mm, rusty villous, unequally 3-winged; abaxial wing oblate-triangular, hirsute, apex obtuse; lateral wings lunate. Fl. Apr.

Guangxi, Yunnan (Jinping) [Vietnam].

Forests, shaded moist environments along streams; 400-500 m.