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General Description

Roots fascicled, fibrous. Stems erect, 30-100 cm tall, together with petioles spreading rigid hairy, rarely glabrescent. Radical leaves lyrate-pinnate, 5-15 cm including petiole, usually with 2-6 pairs of leaflets, both surfaces sparsely rigid hairy; leaflets unequal, terminal one largest, broadly rhombic-ovate or compressed orbicular, 4-15 cm long, 5-15 cm wide, base broadly cordate to cuneate, margin usually irregularly coarsely serrate, apex obtuse or acute; cauline leaves: stipules green, leaflike, ovate, large, margin irregularly coarsely serrate; leaf blade pinnate, sometimes repeatedly lobed; terminal leaflet lanceolate or obovate-lanceolate, base cuneate, apex often acuminate or shortly so. Inflorescence terminal, lax. Flowers 1-1.7 cm in diameter; pedicel pubescent or hirtellous. Sepals ovate-triangular, apex acuminate; epicalyx segments lanceolate, minute, ca. 1/2 as long as sepals, abaxially pubescent and villous, apex acuminate, rarely 2-fid. Petals yellow, suborbicular, longer than sepals. Style terminal, twisted at joint ca. 1/4 way from apex; proximal section pilose; distal section deciduous at fruit maturity. Achene aggregate obovoid; fruiting receptacle hispidulous, hairs ca. 1 mm; achenes hirtellous; proximal section of style persistent, glabrous, apex hooked.


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Wen, Jun

Source: Plants of Tibet

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