Clematis grewiiflora DC., Syst. Nat. 1: 140. 1818 & Prodr. 1: 4. 1824 (as grewiaeflora); Hook. f. & Thomson in Fl. Brit India 1: 6. 1872. C. loasaefolia DC., Syst. Nat. 1: 140. 1818; Hook. f. & Thomson, l. c.

Large woody climbers; branches purplish red, closely ribbed, densely brown tomen- tose, more so at nodes. Leaves pinnate, 3 - 5-foliolate, 12 - 17 cm long, densely brown tomentose; petioles 3 - 4 cm long, ribbed, densely pilose; petiolules of lateral leaflets 5 - 15 mm long, of terminal leaflets 1.5 - 2 cm long; leaflets broadly ovate, often trilobed, culcate, rounded or subcordate at base, crenate-dentate along margins, acute to acumi- nate at apex, 5 - 15 x 2 - 6 cm, coarsely scattered hairy on both surfaces, more on nerves beneath; main nerves 5, palmate, prominent beneath. Inflorescences axillary, many- flowered, trichotomously branched; peduncles densely hairy, ca 10 x 6 mm; pedicels 3 - 4 cm long, often twisted, deasely bairy. Flowers greenish or whitish, 3 - 5 cm across. Sepals ovate or oblong-ovate, acute, 20 - 25 x 8 - 11 mm, densely brown hairy outside, puberulous inside. Filaments long-linear, flat, ca 2 cm long, densely ascending bairy; anthers ca 5 mm long, narrowly twisted. Achenes ovate, compressed, ca 2 cm long, velvety hairy, with up to 3.5 cm long, feathery white silky tails.

Fl. Oct. - Feb.; Fr. up to April.

Distrib. India: Himalayas, dry scrubs in subtropical and warm broad-leaved forests, 700 -1800 m. Himachal Pradesh, Uttar Pradesh, Sikkim, Arunachal Pradesh, Nagaland, Assam and Meghalaya.

Nepal, Bhutan, N. Myanmar and China.