Begonia cehengensis T. C. Ku

This species is known only from the type gathering.

Herbs, erect. Tubers globose, 6-8 mm in diam. Stems 10-16(-20) cm tall, subglabrous. Leaves mostly cauline; stipules caducous, membranous; petiole 4-8 cm, subglabrous; blade brownish on veins, broadly ovate or suborbicular, asymmetric, 7-8 × ca. 6 cm, papery, very thin when dried, subglabrous or sparsely hispidulous, venation palmate, base slightly oblique, rounded, margin shallowly crenate, apex acute. Inflorescences 2-4-flowered, glabrous; peduncle 3-5 cm; bracts caducous, lanceolate, membranous. Staminate flowers: pedicel 4-10 mm; tepals 2, white, depressed-ovate, ca. 8 × 10 mm; stamens numerous; filaments ca. 1 mm, free; anthers obovoid, ca. 1 mm. Pistillate flowers: tepals 2, white, unequal, one depressed-ovate, ca. 8 × 10 mm, other one broadly ovate, ca. 8 × 6 mm; ovary obovoid, glabrous, 3-loculed, apex with beak ca. 3 mm; placentae axile, bilamellate; style 3, free; stigmas U-shaped. Capsule pendulous, obovoid, 5-7 mm, subequally 3-winged; wings oblate-triangular, ca. 5 mm. Fl. Aug, fr. Sep.

Guizhou (Ceheng).

● 700-800 m.