All Floras      Advanced Search
FOC Vol. 13 Page 155, 175, 195, 206 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 13 | Begoniaceae | Begonia

58. Begonia grandis Dryander, Trans. Linn. Soc. London. 1: 163. 1791.

秋海棠 qiu hai tang

Herbs, deciduous. Tubers subglobose, 8-12 mm in diam. Stems 28-60 cm tall, subglabrous. Leaves cauline; stipules caducous, oblong to lanceolate, ca. 10 × 2-4 mm, membranous, margin entire, apex acuminate; petiole 4-20 cm, subglabrous; blade broadly ovate, asymmetric, 10-20 × 7-14 cm, venation palmate, 7(-9)-veined, base obliquely cordate, margin irregularly serrulate, apex acuminate to long acuminate. Inflorescences terminal and axillary, 7-16 cm tall, glabrous, terminal inflorescence racemose at base, axillary inflorescence cymose; bracts caducous, oblate to oblong, 5-13 × 2-17 mm, margin entire, apex obtuse. Staminate flowers: pedicel 0.8-2.2 cm; tepals 4, white to pink, glabrous, outer 2 broadly ovate or suborbicular, 1.1-1.7 × 1-1.7 cm, inner 2 obovate to obovate-oblong, 7-11 × 3-9 mm; stamens 28-140; filaments to 6.1 mm; anthers obovoid, 0.8-1.1 mm, apex emarginate. Pistillate flowers: pedicel 2.5-5 cm; tepals 3, white to pink, glabrous; outer 2 suborbicular or oblate-orbicular, ca. 1.2 × 1.2 cm, inner 1 obovate, ca. 8 × 6 mm; ovary glabrous, 3-loculed; placentae axile, bilamellate; styles fused at base or free; stigmas 2-cleft or U-shaped, spiraled or not. Capsule pendulous, oblong, 10-12 × ca. 7 mm, unequally 3-winged; abaxial wing oblong or triangularly oblong, ca. 1.8 cm; lateral wings narrowly triangular, or all wings narrowly triangular. Fl. Jul, fr. Aug. 2n = 26*.

● Forests, evergreen broad-leaved forests on montane slopes, streamsides in dense valley forests, moist rocky cliffs of valleys, wet fissures of limestone rocks, on rocks in shaded moist environments, on slopes, in valleys, or by streams; 100-3400 m. Anhui, Fujian, S Gansu, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangxi, Shaanxi, Shandong, Shanxi, Sichuan, Yunnan, Zhejiang.

1 Styles free, not branched; stigma apical or reniform; filaments connate not beyond 1 mm.   58c subsp. holostyla
+ Styles connate at base or slightly connate, branched; stigma spirally tortuous, U-shaped; stamens more numerous, filaments connate to or beyond 2 mm above base   (2)
2 (1) Stem weak; leaf blade abaxially pale, occasionally reddish, elliptic-ovate to triangular-ovate, 5-12(-20) × 3.5-9(-13) cm; filaments connate for less than 2 mm.   58b subsp. sinensis
+ Stem stout; leaf blade abaxially red or at least red on veins, ovate to broadly so, larger than above; filaments connate beyond 2 mm.   58a subsp. grandis


Related Objects  

Photos by The Biodiversity of the Hengduan Mountains Project  
  • Image/JPEG (Jipei Yue)
  • Image/JPEG

    Flora of China @
    Browse by
    Advanced Search

    Flora of China Home




     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |