Begonia tessaricarpa

Description Rhizomatous, dioecious herb, 15 – 30 cm high. Rhizome: unseen. Stipules: ovate, 2.5 – 8 × 2 – 5 mm, puberulous, persistent. Leaves: petiole 14 – 31 cm long, tomentose denser near leaf; lamina ovate, basifixed, base cordate with lobes not overlapping, 7 – 10.5 × 4 – 8 cm, upper surface dark green, puberulous, underside pale green, tomentose on veins mostly; margin entire-repand, occasionally with teeth at end of veins, with sparse hairs or glabrous; apex acute. Inflorescence: cymose, terminal, few; peduncle puberulous; male branching once, 2 – 7 cm long, 2 male flowers; female branching once, 2 – 3 cm long, 2 female flowers; bracts lanceolate, 5 × 2 mm, glabrous, persistent. Male flower: pedicel 10 – 17 mm long, tomentose; tepals 4; outer tepals obovate, 5 – 6 × 3 – 4 mm, white to pink, puberulous hairs on reverse, entire; inner tepals obovate-elliptic, 5 – 6 × 2 – 3 mm, white to pink, glabrous; androecium with 12 – 20 stamens, symmetric; filaments 1 mm long, free; anther oblong elliptic, 2 – 3 mm long, dehiscing through slits longer than half the length of the anther, not hooded, connective extended. Female flower: pedicel 7 – 12 mm long, tomentose; bracteoles absent; tepals 4 – 5, white to pink, puberulous on reverse; ovary 4 - locular, placentae bifid; capsule pyramidal, 6 × 5.5 mm, tomentose, without wings, with four horn-like projections; styles 4, deeply forked once and twisted twice, deciduous or persistent. Fruit: on stout pedicel; capsule pyramidal, 10 – 11 × 9 – 11 mm, sparsely tomentose to glabrous.