Begonia zhengyiana Y. M. Shui

Herbs rhizomatous. Rhizomes creeping, villous; internodes 5-10 mm. Leaves all basal; stipules broadly triangular, 3-4 × 3-4 mm, glabrous, apex acute; petiole 2-6 cm, villous; blade reniform to suborbicular, 4-6 × 7-11 cm, thickly herbaceous, abaxially villous on veins, adaxially glabrous, basally 3-5-veined, tertiary veins randomly reticulate, obscure, base cordate or shallowly so, margin irregularly repand, denticulate and ciliate, without a distinct apex. Inflorescence axillary, flowers 4 or 5 in dichasial cymes; peduncle 4-6.5 cm, glabrous; tepals pink. Staminate flowers: pedicel 6-7 mm, subglabrous; tepals 4, outer 2 larger, suborbicular, 7-8 × 5-6 mm, glabrous, apex rounded, inner 2 small, 7-8 × 2.5-3 mm; stamens numerous; filaments 0.6-0.7 mm, fused below into a short column; anthers oblong, 0.7-0.9 × 0.4-0.6 mm. Pistillate flowers: pedicel ca. 4 mm; tepals 3, outer 2 orbicular, 3-4 × 3-4 mm, inner 1 elliptic, 2.5-3 × ca. 1 mm; ovary 1-loculed with parietal placentae on upper part; styles 3, 1.4-1.5 mm. Capsule nodding, ellipsoid, equally 3-winged, wings triangular, 3.5-4.5 × 0.9-1.2 mm, apex obtuse. Fl. Aug-Oct.

SE Yunnan (Hekou, Maguan).

● On limestone rock faces in seasonal rain forests or in limestone tropical seasonal forests; 500-600 m.