59. Begonia guangxiensis C. Y. Wu, Acta Phytotax. Sin. 35: 45. 1997.
广西秋海棠 guang xi qiu hai tang
Herbs, rhizomatous. Rhizomes creeping, stout, 1.3-2 cm in diam. Leaves all basal; stipules caducous; petiole 10-22 cm, villous; blade obliquely broadly ovate or suborbicular in outline, 10-33 × 8-24 cm, papery, both surfaces villous-hirsute, basally 6- or 7-veined, tertiary veins weakly percurrent and reticulate, base deeply cordate, margin unequally shallowly dentate or denticulate, sometimes 3-5 shallowly sharply lobed, apex acuminate, often white-tipped. Inflorescences axillary; peduncle 10-35 cm, villous; flowers 5-20 in a dichasial cyme; bracts ovate, broadly ovate, or triangular-lanceolate, 2-9 × 1.7-6 mm. Staminate flowers: pedicel 1-1.5 cm; tepals 4, outer 2 broadly ovate or suborbicular, ca. 1.7 × 2 mm, abaxially pilose, inner 2 obovate or elliptic, ca. 12 × 6-7 mm; androecium nearly actinomorphic; stamens numerous; filaments fused at base, anthers obovoid, apex truncate. Pistillate flowers: pedicel ca. 3 cm; tepals 3; styles 3; ovary villous, 1-loculed with parietal placentation. Capsule nodding, ovoid-oblong, 1.5-2.1 × 1-1.4 cm, hairy, unequally 3-winged; abaxial wing obliquely lunate, other 2 narrow, lunate, hispidulous. Fl. Jan-Mar, fr. Mar-May.
● Limestone hills, on moist rocky slopes, forest understories, in caverns; 200-300 m. Guangxi (Du’an, Yishan).