Begonia thomsonii

Begonia thomsonii ist eine Art blühender Pflanze in der Familie Begoniaceae, die in Assam, Bangladesch, Ost-Himalaja und Myanmar beheimatet ist. Es ist ein mehrjähriger, rhizomatöser Geophyt, der in feuchten Wäldern wächst.

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Description Rhizomatous, sprawling, monoecious herb, 10 – 30 cm high. Rhizome: ca 10 mm, villose, internodes 8 – 12 mm long. Stem: slender, 2 – 4 mm wide, densely red villose, unbranching. Stipules: lanceolate, 9 – 20 × 2 – 6 mm, red villose, persistent. Leaves: petiole 4 – 14 cm long, densely red villose; lamina ovate to ovate-orbicular, basifixed, base cordate with lobes not overlapping, (3 –) 6 – 14 × (2 –) 4 – 10 cm, asymmetric, upper surface dark red to green, densely red strigose all over, underside green to purple, red strigose all over with longer hairs on veins, venation palmate, midrib (2 –) 4 – 12 cm long; margin entire with teeth at end of veins to denticulate, with long hairs; apex acute. Inflorescence: cymose, terminal and axillary, few; peduncle densely villose, branching twice, primary 1.5 – 3.5 cm long, secondary 3 – 5 mm long, with 2 – 4 female and 5 – 8 male flowers; bracts lanceolate, 7 – 8 × 2 mm, densely villose, persistent. Male flower: pedicel 8 – 15 mm long, red villose; tepals 4; outer tepals ovate to oblongelliptic, 8 – 13 × 5 – 8 mm, pale pink to pink, red villose on reverse, margin entire, with hairs; inner tepals elliptic, 4 – 9 × 2 – 4 mm, pale pink to pink, glabrous; androecium with 35 – 70 stamens, symmetric; filaments 1 – 2 mm long, unequal, fused at base; anther oblong elliptic, 1 – 2 mm long, dehiscing through slits running nearly the entire length of the anther, not hooded, connective extended. Female flower: not seen; ovary 2 - locular, placentae bifid; capsule obovoid-ellipsoid, villose, with one long triangular wing and two short crescent wings; styles caduceus. Fruit: recurved; capsule obovoid, 6 – 14 × 6 – 9 mm, sparsely villose; wings extending along the pedicel slightly, subequal; longest rounded triangle, 12 – 30 × 9 – 18 mm; shortest semi-circular, 2 – 10 × 8 – 15 mm.