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

48. Begonia fenicis Merrill, Philipp. J. Sci. 3: 421. 1909.

兰屿秋海棠 lan yu qiu hai tang

Begonia kotoensis Hayata.

Herbs, rhizomatous. Rhizomes elongate, to 1.9 cm in diam. Leaves basal; stipules ovate to triangular, to 2.1 × 1.8 cm, glabrous, apex mucronate, acuminate; petiole 7-31 cm, glabrous; blade broadly ovate to orbicular, asymmetric, 7-26 × 6-21 cm, glabrous or abaxially remotely scaberulous, venation palmate, 7-10-veined, base oblique, cordate, margin irregularly denticulate, apex mucronate to acuminate. Inflorescences 17-53 cm, glabrous; bracts caducous, orbicular to oblate, to 1.4 × 1.8 cm, glabrous, margin entire and often reflexed, apex retuse to apiculate. Staminate flowers: pedicel 8-10 mm; tepals 4, outer 2 obovate to orbicular, 0.9-2.5 × 0.8-2.2 cm, inner 2 oblanceolate to narrowly obovate, 0.8-2.3 cm × 4-11 mm; stamens 39-58; filaments 1.2-2.3 mm; anthers broadly oblong, 1.4-1.8 mm, apex obtuse. Pistillate flowers: pedicel 1.5-2 cm; tepals 5(or 6), unequal, oblanceolate to broadly obovate, largest 0.8-2.1 × 0.7-1.8 cm, smallest 0.7-18 cm × 4-8 mm; ovary glabrous, 3-loculed; placentae axile, bilamellate; styles 3, fused at base; stigmas 2-cleft, spiraled. Capsule nodding, unequally 3-winged; abaxial wing transversely elliptic, 6-10 mm; lateral wings lunate, 3-8 mm. Fl. May-Oct. 2n = 26*.

Margins of coastal forests, raised coral rocks by seashores; below 100 m. Taiwan (Huoshao Dao, Lan Yu) [Japan (Ryukyu Islands), Philippines (Bataan Islands)].


 

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