Begonia brevisetulosa C. Y. Wu

This species is known only from type gathering. It is similar to Begonia augustinei but differs by its yellow-green leaf blade with sharply serrulate margin.

Herbs. Rhizomes 5-8 mm in diam. Leaves basal; stipules membranous, caducous; petiole purple-red, 4.5-11 cm, densely brown villous; blade abaxially pale, adaxially yellow-green, oblong-ovate, asymmetric, 5.5-12 × 3.5-10.2 cm, abaxially sparsely shortly setose, adaxially densely hispidulous, venation palmate, 6(or 7)-veined, base slightly oblique, cordate, margin irregularly sharply serrulate, apex caudate-acuminate. Inflorescences 10.2-12.5 cm tall, densely hirsute; bracts abaxially hairy. Staminate flowers: tepals 4, outer 2 broadly ovate, ca. 12 × 8 mm, abaxially hirsute, inner 2 oblong, ca. 8 × 3 mm; stamens numerous; filaments free, ca. 1 mm; anthers oblong, ca. 1 mm. Pistillate flowers unknown. Immature capsule nodding, narrowly obovoid, 1.5-1.8 cm, pilose, 2-loculed, placentae axile, bilamellate, unequally 3-winged; abaxial wing ovate-lanceolate, ca. 1.5 × 1 cm, apex rounded; lateral wings smaller.

● SW Sichuan (Muli).