长尾尖铁线莲 chang wei jian tie xian lian

Vines woody. Branches sparsely puberulous. Leaves ternate; petiole 4--6 cm; leaflet blades ovate-lanceolate to narrowly ovate, 7--12 × 2--5 cm, subleathery, both surfaces subglabrous and conspicuously reticulate, base rounded, margin entire, apex caudate; basal veins abaxially prominent. Cymes axillary, ca. 3-flowered; peduncle 1--2 cm, glabrous; bracts small, subulate. Flowers ca. 7 mm in diam. Pedicel 1--2 cm. Sepals 4, yellow, erect, ovate-oblong, 1.4--1.7 × 0.5 cm, abaxially appressed puberulous, adaxially sparsely puberulous only near apex, margin abaxially velutinous, apex attenuate. Stamens 1--1.4 cm; filaments densely pubescent; anthers narrowly oblong, 2.2--3 mm, glabrous, apex obtuse. Ovaries puberulous. Style ca. 1 cm, densely villous. Fl. Dec.

* Yunnan (Binchuan Xian).

Clematis acuminata var. acuminata occurs in the Himalayas.