Clematis buchananiana
DC., Syst. Nat. 1: 140. 1817 & Prodr. 1: 4. 1824 (as
buchaniana); Hook. f. & Thomson in Fl. Brit. India 1: 6. 1872. C. buchandniana vars.
rugosa, tortuosa and vitifolia Hook. f. & Thomson, l.c.
Garh.: Alaka-loga; Jain.: Tillo-kynsaw-bla; Kh.: Mei-bytengdoh; Kumaon.: Ghanila.
Large woody climbers; branches sulcate, greyish or brownish pilose with long spreading fibrous hairs. Leaves ternate or rarely pinnate, 3 - 7-foliolate; petiolules ribbed, 5 - 7 cm long, pilose or brownish pubesc6nt; bases of opposite petioles sometimes broadened, thickened and united; leaflets broadly ovate-lanceolate, orbicular, sometimes 2 - 3-lobed, rounded or subcordate and 5 - 7-nerved at base, acute or subacute at apex, coarsely crenate-serrate along margins, 5 - 15 x 4 - 12 cm, pubescent above, white or densely hoary beneath; petiolu1es 1 - 3 cm long, often twining. Inflorescence axillary, 3- to many-flowered, leafy panicles, thinly pilose; peduncles 4 - 9 cm long, ribbed, hairy; bracts and bracteoles in pairs at each node, foliaceous, ovate-lanceolate, variable in shape, 5 - 10 x 3 - 8 cm; pedicels 2 - 4 cm long. Flowers 4 - 6, erect, often with recurved tips. Sepals, ovate, oblong or oblong-lanceolate, acute or obtuse, 2 - 3 x 0.5 - 0 .7 cm, many-ribbed outside, greenish yellow, white tomentose inside, densely brownish pubescent outside. Filaments linear, flat, ca 1 cm long, densely short hairy; anthers twisted, ca 5 mm long; connectives hardly prolonged above anthers. Achenes ovate or obovate, compressed, 4 - 5 x 2 - 3 mm, densely hairy, with up to 5 cm long feathery long silky tails.
Fl. & Fr. May-Jan.
Distrib. India: Evergreen subtropical and temperate forests on Himalayas and N.E. regions, 1000 - 3000 m. Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh, West Bengal, Sikkim, Arunachal Pradesh, Nagaland, Manipur, Mizoram, Assam and Megha- laya.
Nepal, Bhutan, Bangladesh, N. Myanmar, Vietnam and China.
Notes. Chromosome no. 2n = 16 (Bhattacharjee in Sci. & Cult. 42: 234. 1976).
A variable species with 2 varieties, var. rugosa Hook. f. & Thomson with prominently nerved leaves from Bhutan and var. tortuosa Hook. f. & Thomson with pinnate leaves from Sikkim have been described. They are scarcely distinguishable in populations, with interconnecting intermediaries.
Large woody climbers; branches sulcate, greyish or brownish pilose with long spreading fibrous hairs. Leaves ternate or rarely pinnate, 3 - 7-foliolate; petiolules ribbed, 5 - 7 cm long, pilose or brownish pubesc6nt; bases of opposite petioles sometimes broadened, thickened and united; leaflets broadly ovate-lanceolate, orbicular, sometimes 2 - 3-lobed, rounded or subcordate and 5 - 7-nerved at base, acute or subacute at apex, coarsely crenate-serrate along margins, 5 - 15 x 4 - 12 cm, pubescent above, white or densely hoary beneath; petiolu1es 1 - 3 cm long, often twining. Inflorescence axillary, 3- to many-flowered, leafy panicles, thinly pilose; peduncles 4 - 9 cm long, ribbed, hairy; bracts and bracteoles in pairs at each node, foliaceous, ovate-lanceolate, variable in shape, 5 - 10 x 3 - 8 cm; pedicels 2 - 4 cm long. Flowers 4 - 6, erect, often with recurved tips. Sepals, ovate, oblong or oblong-lanceolate, acute or obtuse, 2 - 3 x 0.5 - 0 .7 cm, many-ribbed outside, greenish yellow, white tomentose inside, densely brownish pubescent outside. Filaments linear, flat, ca 1 cm long, densely short hairy; anthers twisted, ca 5 mm long; connectives hardly prolonged above anthers. Achenes ovate or obovate, compressed, 4 - 5 x 2 - 3 mm, densely hairy, with up to 5 cm long feathery long silky tails.
Fl. & Fr. May-Jan.
Distrib. India: Evergreen subtropical and temperate forests on Himalayas and N.E. regions, 1000 - 3000 m. Jammu & Kashmir, Himachal Pradesh, Uttar Pradesh, West Bengal, Sikkim, Arunachal Pradesh, Nagaland, Manipur, Mizoram, Assam and Megha- laya.
Nepal, Bhutan, Bangladesh, N. Myanmar, Vietnam and China.
Notes. Chromosome no. 2n = 16 (Bhattacharjee in Sci. & Cult. 42: 234. 1976).
A variable species with 2 varieties, var. rugosa Hook. f. & Thomson with prominently nerved leaves from Bhutan and var. tortuosa Hook. f. & Thomson with pinnate leaves from Sikkim have been described. They are scarcely distinguishable in populations, with interconnecting intermediaries.
