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FOC | Family List | FOC Vol. 6 | Ranunculaceae | Ranunculus

57. Ranunculus membranaceus Royle, Ill. Bot. Himal. Mts. 53. 1834.

棉毛茛 mian mao gen

Herbs perennial. Roots fibrous, subequally thick. Stems 2.5--28 cm, velutinous or puberulent, branched or simple. Basal leaves 3--7; petiole 1.5--8 cm, puberulent or glabrous; blade undivided or sometimes 3-lobed or 3-partite, lanceolate, oblong, or linear, 1--7.5 × 0.3--0.9 cm, papery, abaxially velutinous or appressed puberulent, base attenuate or cuneate. Stem leaves short petiolate or sessile, linear-lanceolate, undivided, 3-lobed, or 3--5-sect. Flowers solitary, or 2 in a terminal monochasium, 1--2.2 cm in diam. Receptacle glabrous or puberulent. Sepals 5, ovate or broadly ovate, 3--7.5 mm, abaxially velutinous or puberulent. Petals 5(--7), obovate or broadly obovate, (4--)5.5--10 × (1.5--)4--10 mm, nectary pit without a scale, apex rounded. Stamens numerous; anthers narrowly oblong. Aggregate fruit ovoid, 5--12 × 4--7 mm. Achene obliquely obovoid, 1.5--2 × 1--1.6 mm, glabrous; style persistent, 0.5--0.8 mm.

2700--5000 m. S Gansu, SW Nei Mongol (Helan Shan), SW Ningxia, Qinghai, NW and S Sichuan, S Xinjiang, S Xizang [Nepal, Pakistan].

1 Basal leaf blade adaxially sparsely pubescent, abaxially velutinous   57a var. membranaceus
+ Basal leaf blade adaxially glabrous or sparsely pubescent, abaxially appressed pubescent.   (2)
2 (1) Basal leaf blade undivided or 3-lobed; stem leaves 3-sect; flowers solitary, terminal; petals 5   57b var. pubescens
+ Basal leaf blade 3-lobed or 3-partite nearly to base; stem leaves mostly 5-sect; flowers often 2 in a terminal monochasium; petals 5--9   57c var. floribundus


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