Begonia xishuiensis T. C. Ku

This species is similar to Begonia summoglabra but differs by its herbaceous, shallowly lobed leaves.

Herbs, deciduous. Tubers globose, ca. 1.5 cm in diam. Leaves 1 or 2 basal, with 1 or 2 smaller leaves on inflorescence; stipules caducous, 3.6-6.7 × 5.7-8.9 mm, margin denticulate, apex acute; petiole 9-14 cm, glabrous; blade purple abaxially, broadly ovate, slightly asymmetric, 11-16 × 8-10 cm; glabrous, venation palmate, 7-veined, base slightly oblique, shallowly cordate, margin very shallowly denticulate, shallowly lobed on upper half, divided to 1/3 of leaf length; lobes 3 or 4, apex acuminate or acute. Inflorescences terminal, 6-32 cm tall, glabrous; bracts caducous, lanceolate or ovate-lanceolate, 2-4 × 1-2 mm, membranous. Staminate flowers: pedicel ca. 0.5 mm; tepals 2, broadly ovate, 6-11 × 6-12 mm; stamens 11-16; filaments fused at base, 1.3-2.5 mm; anthers obovoid or subglobose, 0.8-1.1 mm, apex emarginate. Pistillate flowers: pedicel 1.5-3.1 cm; tepals 2, suborbicular, 7-10 × 6-12 mm; ovary glabrous, 3-loculed; placentae axile, bilamellate; styles 3, ca. 3.1 mm, fused at base; stigmas U-shaped. Capsule pendulous, unequally 3-winged; abaxial wing triangular, ca. 8 × 16 mm; lateral wings smaller, ca. 5 mm. Fl. May.

Guizhou (Xishui).

● Forests, on shaded moist rocky slopes; 700-800 m.

Begonia xishuiensis est une espèce de plantes de la famille des Begoniaceae. L'espèce fait partie de la section Diploclinium. Elle a été décrite en 1995 par Tsue Chih Ku (1931-).

Begonia xishuiensis adalah spesies tumbuhan yang tergolong ke dalam famili Begoniaceae. Spesies ini juga merupakan bagian dari ordo Cucurbitales. Spesies Begonia xishuiensis sendiri merupakan bagian dari genus Begonia. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh T.C.Ku.

Begonia xishuiensis là một loài thực vật có hoa trong họ Thu hải đường. Loài này được T.C.Ku mô tả khoa học đầu tiên năm 1995.

习水秋海棠（学名：Begonia xishuiensis）是秋海棠科秋海棠属的植物，是中国的特有植物。分布于中国大陆的贵州等地，生长于海拔480米的地区，多生长于潮湿地的岩石上，目前已由人工引种栽培。