Botanical Survey of India | Flora of India

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Impatiens drepanophora Hook. f. in Rec. Bot. Surv. India 4: 17. 1905; Toppin in Bull. Misc. Inform. 1920: 364. 1920; H. Hara in Fl. E. Himal. 1: 195. 1966.


Herbs, annual, slender, 25 - 50 cm high; stems often creeping at base, branched, glabrous; nodes swollen. Leaves erect, alternate or opposite, ovate-lanceolate to ovate or ovate-elliptic, slightly attenuate towards base, acuminate at apex, margins finely serrate-dentate with lowermost teeth filiform, 2.5 - 11 x 1.7 - 5.5 cm, glabrous; lateral nerves 7 - 12 pairs; petioles 2 - 5 mm, glabrous. Flowers pedicellate, more or less horizontal, 2 - 2.7 cm long, yellow; bracts ovate-lanceolate, up to 4 mm long; pedicels deciduous, slender, 1.5 - 2.3 cm long, glabrous. Lateral sepals uncinate, incurved, 2 - 3 mm long, long awned. Lip bucciniform with 1 mm long appendage, 1.7 - 2 cm long, spurred; spur abruptly constricted, filiform, 1.2 - 1.7 cm long. Standard orbicular, with long narrow curved ends. Wings oblong, ca 2 cm long; distal lobes oblong; dorsal auricle small. Capsules fusiform, ca 1.5 cm long; seeds oblong, ca 1 mm long, glabrous or tuberculate.

Fl. & Fr. May - July.

Distrib. India: E. Himalayas, ca 1800 m. Sikkim, Arunachal Pradesh, Nagaland, Manipur and Meghalaya.

Nepal.

Chromosome no. 2n = 20 (Sarkar, A.K. et al. in Taxon 24: 367 - 372. 1975).





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