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

145. Begonia sikkimensis A. Candolle, Ann. Sci. Nat., Bot., sér. 4. 11: 134. 1859.

锡金秋海棠 xi jin qiu hai tang

Herbs, ca. 30 cm tall. Rhizomes elongate, ca. 1.5 cm in diam. Stems glabrous. Leaves basal and cauline; stipules lanceolate, ca. 1.1 cm, membranous, glabrous, apex acuminate; petiole 3-15 cm, glabrous; blade suborbicular, slightly asymmetric, 12-19 × 10-20 cm, glabrous, venation palmate, 5-7-veined, base shallowly cordate, margin remotely and shallowly denticulate, distinctly lobed, divided to more than 2/3 of leaf length; lobes 5-7, apex long acuminate. Inflorescences glabrous; peduncle 8-12 cm; bracts ovate-lanceolate, 2-2.5 cm, membranous, apex acuminate. Staminate flowers: pedicel 1.5-1.8 cm; tepals 4, pink, outer 2 ovate, inner 2 elliptic, smaller; stamens numerous; anthers obovoid, ca. 1 mm, apex obtuse. Pistillate flowers: tepals 5, unequal; ovary glabrous, 2-loculed; placentae axile, bilamellate; styles 2, fused at base; stigmas 2-cleft, spiraled. Capsule nodding, obovoid-oblong, 1.5-2 cm × 6-7 mm, unequally 3-winged; abaxial wing oblong-triangular; lateral wings smaller. Fl. Aug-Sep, fr. Dec-Jan.

Evergreen broad-leaved forests, shaded moist environments along streams; 800-1200 m. SE Xizang (Mêdog) [Bhutan, NE India, Nepal].


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