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40. DUCHESNEA Smith, Trans. Linn. Soc. London, Bot. 10: 372. 1811.

蛇莓属 she mei shu

Li Chaoluan (Li Chao-luang); Hiroshi Ikeda, Hideaki Ohba

Herbs perennial. Rhizome short. Stolons procumbent, long, filiform, bearing adventitious roots and forming plantlets at nodes. Radical leaves several, stolon leaves alternate, long petiolate; stipules paired, adnate to base to petiole, persistent; leaf blade 3-foliolate; leaflets dentate at margin. Inflorescence axillary, ebracteate, a solitary flower. Sepals 5, persistent; epicalyx segments 5, larger than and alternating with sepals, margin incised. Petals 5, yellow, obovate. Stamens numerous; anthers subglobose. Carpels numerous, free, inserted on convex receptacle; style adaxial or subterminal, deciduous; stigma entire. Aggregate fruit formed from enlarged receptacle, hemispheric or turbinate, fleshy. Achenes seated on surface of aggregate fruit, compressed ovoid, minute. Seed reniform, smooth. x = 7.

Two species: Afghanistan, Bhutan, China, India, Indonesia, Japan, Korea, Malaysia, Nepal, Sikkim; naturalized in Africa, Europe, and North America; two species in China.

1 Leaflets 2–3.5 cm, rarely smaller or larger; flowers 1.5–2.5 cm in diam., rarely smaller; aggregate fruit ripening red, shining, 1–2 cm in diam.; achenes shining when fresh, glabrous or inconspicuously papillate.   1 D. indica
+ Leaflets 1.5–2.5 cm; flowers 0.5–1.5 cm in diam.; aggregate fruit ripening pale pink, not shining, 0.8–1.2 cm in diam.; achenes not shining when fresh, rugose.   2 D. chrysantha

Lower Taxa


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