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FOC | Family List | FOC Vol. 13 | Begoniaceae | Begonia

75. Begonia josephii A. Candolle, Ann. Sci. Nat., Bot., sér. 4. 11: 126. 1859.

重齿秋海棠 chong chi qiu hai tang

Herbs, deciduous. Tubers 1-1.5 cm in diam. Leaves 1(or 2); stipules caducous, ovate, membranous, margin ciliate; petiole 10-21.5 cm, brown villous; blade peltate, broadly ovate to suborbicular, nearly symmetric, 10-16 × 8.5-13 cm, abaxially brownish pubescent, adaxially hirsute, venation palmate, 7-veined, base rounded, margin denticulate, apex acuminate or caudate-acuminate. Inflorescences terminal, racemose at base, 20-28 cm tall, brown villous; bracts ovate, 5-7 mm, membranous, abaxially hairy. Staminate flowers: pedicel 1-1.8 cm; tepals 4, pink, outer 2 broadly ovate, ca. 6 × 4-5 mm, abaxially hispidulous, apex obtuse, inner 2 oblong, ca. 4 × 1 mm; stamens numerous; filaments ca. 0.8 mm; anthers oblong to obovoid-oblong, ca. 1 mm, apex emarginate. Pistillate flowers: tepals 4-6, unequal, variable in shape; ovary sparsely purplish hairy, 3-loculed; placentae axile, bilamellate; style 3, fused to halfway; stigmas U-shaped. Capsule pendulous, obovoid or subglobose, ca. 7 × 8-9 mm, unequally 3-winged; abaxial wing falcate, to 1.2 cm, apex rounded; lateral wings triangular, 2-3 mm. Fl. Jul-Aug, fr. Aug.

Forests or forest margins, on rocks in moist environments; 2600-2800 m. Xizang (Cona) [Bhutan, NE India, Nepal].


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