Begonia alveolata T. T. Yu

This species resembles Begonia morifolia but differs by its glabrous flowers and very shallowly lobed leaves.

Herbs, erect on upper part, ascending at base. Rhizome absent. Stems slender. Leaves cauline, asymmetric; stipules ovate-lanceolate, ca. 5 mm, membranous, pilose, apex acute; petiole 3-6 mm, densely villous; blade ovate, asymmetric, 4-6.5 × 3-5 cm, thin when dried, abaxially densely papillose, subglabrous or sparsely pubescent on veins, villous at junction between blade and petiole, adaxially sparsely hirsute, venation palmate-pinnate, 6-veined, base obliquely cordate, margin irregularly denticulate, apex acuminate. Inflorescences subglabrous; bracts caducous, apex acuminate. Staminate flowers: tepals 4, pinkish, glabrous, outer 2 elliptic or obovate, ca. 12 × 6 mm, inner 2 elliptic, ca. 6 × 2 mm; stamens numerous; filaments free. Pistillate flowers: tepals 5, subequal, 8-10 × 4-6 mm, glabrous; ovary 3-loculed, glabrous; placentae axile, bilamellate; styles 3, free; stigmas 2-cleft, spiraled. Capsules pendulous, unequally 3-winged; abaxial wing larger, triangular. Fl. Nov.

Yunnan (Pingbian) [Vietnam].

Forests, moist environments; 1000-1500 m.

Begonia pingbienensis C. Y. Wu.