Vasilis Teodoridis:
Ranunculaceae | Clematis
4. Clematis montana Buchanan-Hamilton ex de Candolle; Syst. Nat. 1: 164. 1817.
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Vines woody. Branches terete; often shallowly 4--10-grooved; puberulous; glabrescent. Leaves ternate; petiole 2.5--9 cm; leaflet blades ovate; rhombic-ovate; or elliptic; 1.8--7(--14) x 1--5 cm; papery to herbaceous; undivided or 3-lobed; both surfaces sparsely puberulous; base broadly cuneate to rounded; margin sparsely dentate or occasionally entire; apex acuminate or acuminate; basal veins abaxially nearly flat. Flowers (1 or)2--4(--6) borne together with several leaves from axillary buds of old branches; 1.5--11 cm in diam. Pedicel 1--20 cm; sparsely puberulous. Sepals 4; white or sometimes tinged pink; spreading; obovate to oblong-obovate; (0.7--)1.3--6.5 x (0.3--)1--2.5 (--3.5) cm; abaxially puberulous; adaxially glabrous; apex rounded to rarely emarginate or short acuminate. Stamens 6--18 mm; glabrous; anthers narrowly oblong; sometimes linear; (1.5--)2--3(--4) mm; apex obtuse to minutely apiculate. Ovaries glabrous; rarely puberulous. Style 0.5--1 cm; densely villous. Achenes ovate to rhombic-ovate; 4--5 x 3--4 mm; glabrous; rarely appressed puberulous; persistent style 2--6(--7) cm; plumose. Fl. Apr--Sep; fr. Jul--Sep.
Forests; forest margins; slopes; scrub; along streams; 1000--4000 m. S Anhui; NW Fujian; S Gansu; N Guangxi; Guizhou; SW Henan; Hubei; Hunan; Jiangxi; S Ningxia; E Qinghai; S Shaanxi; Sichuan; Taiwan; E and S Xizang; Yunnan; Zhejiang [Afghanistan; Bhutan; N India; Kashmir; N Myanmar; Nepal; N Pakistan; Sikkim].
4c. Clematis montana var. sterilis Handel-Mazzetti; Symb. Sin. 7: 320. 1931.
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Leaflet blades 1.2--3(--4) cm. Flowers 2--3 cm in diam. Pedicel 1--4 cm. Sepals 0.1--1.2 x 0.3--0.9 cm. Anthers narrowly oblong; 2--2.5 mm; apex obtuse. Ovaries glabrous. Achenes glabrous; persistent style ca. 2 cm. Fl. Apr--Jun; fr. Aug--Sep.
* Forests slopes; 2400--3000 m. SW Sichuan; E Qinghai; NW Yunnan.