匍茎秋海棠 pu jing qiu hai tang

Herbs. Rhizomes ca. 4.5 mm in diam.; internodes 1.5-5 cm. Leaves basal; stipules caducous, ovate-oblong, 12-18 × 4-6 mm, abaxially rusty villous, apex acuminate; petiole 9-22 cm, shortly pilose; blade abaxially pale green, adaxially dark green, broadly ovate or suborbicular, asymmetric, 12-16 × 10-14 cm, abaxially rusty hispidulous, adaxially rusty brown hispidulous, venation palmate, 5-7-veined, base slightly oblique, cordate, margin serrulate, shallowly lobed; lobes triangular, apex acuminate. Inflorescences 28-31 cm tall, hispidulous. Flowers not seen. Capsule nodding, oblong, 8-12 × 4-5 mm, 2-loculed, placentae axile, bilamellate, unequally 3-winged; abaxial wing oblong or narrowly ligulate, 11-13 × ca. 5 mm; lateral wings triangular, 6-8 mm. Fr. Aug.

● Yunnan (between Tengchong and Dali).

This species is similar to Begonia palmata but differs by lacking a cauline leaf.