Clematis formosana Kuntze

Vines perennial, herbaceous. Branches shallowly 4--6-grooved, densely puberulous. Leaves ternate; petiole 2.8--6.2 cm; leaflet blades lanceolate to narrowly ovate, rarely ovate, 3.2--6.3(--7.4) × (0.8--)1.1--2.3(--3.4) cm, papery, undivided or 3-lobed, abaxially sparsely puberulous, adaxially glabrous or subglabrous, base broadly cuneate, margin entire, apex attenuate to acuminate and mucronate; basal veins abaxially ± prominent. Cymes axillary or terminal, 3--5-flowered; peduncle 0.5--3 cm, densely puberulous; bracts petiolate, narrowly ovate to lanceolate. Flowers 1.5--2.5 cm in diam. Pedicel 0.5--3.4 cm, densely puberulous. Sepals 4, white, spreading, narrowly oblong, 8--13 × 3--4 mm, abaxially densely appressed puberulous, adaxially glabrous, apex acute-mucronate. Stamens 2--9 mm, glabrous; anthers oblong, 0.8--1 mm, apex obtuse. Ovaries pubescent. Style 6--7 mm, densely villous. Achenes ovate to elliptic, 3--5 × ca. 2.5 mm, pubescent; persistent style 1.5--4 cm, yellowish plumose. Fl. Nov--Jan, fr. Jan--Feb.

E to S Taiwan.

* Sunny areas, forest margins; near sea level to 800 m.

Clematis sasakii Shimizu.

Clematis formosana là một loài thực vật có hoa trong họ Mao lương. Loài này được Kuntze mô tả khoa học đầu tiên năm 1896.