Botanical Survey of India | Flora of India

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Impatiens tripetala Roxb. ex DC., Prodr. 1: 687. 1824; Roxb., Fl. Ind. 2: 453. 1832; Hook. f., Fl. Brit. India 1: 470. 1875 & in Rec. Bot. Surv. India 4: 13. 1905; Toppin in Bull. Misc. Inform. 1920: 358. 1920; Biswas, Pl. Darj. Sikkim Himal. 1: 206. 1966; H. Hara in Fl. H. Himal. 1: 197. 1966 & 2: 76. 1971. I. tripetala Roxb. ex DC. var. microscypha Hook. f. in Bull. Misc. Inform. 1910: 298. 1910. I. multiflora Wallich ex Hook. f. & Thomson in J. Linn. Soc., Bot. 4: 126. 1860.


Herbs, annual; nodes swollen. Leaves opposite or whorled, ovate-elliptic, shortly attenuate at base, acuminate at apex, shallowly serrate along margins, 3.5 - 20 x 2 - 7.5 cm long, green, paler beneath or whitish, finely pubescent above; lateral nerves 6 - 19 pairs; stipules filiform. Flowers 2 - 2.5 cm long; peduncle short, ca 2.5 mm; pedicels slender, 1.3 - 2.3 cm long, solitary or fascicled. Lateral sepals linear-lanceolate, acuminate, ca 3 x 1 mm. Lip beaked, 1.2 - 1.5 x 1 - 1.2 cm, spurred; spur curved,ca 8 mm long. Standard semicucullate. Wings ca 1.6 cm long; basal and distal lobes about equal in size; basal lobes broadly elliptic, 8 - 10 x 5 - 6 mm; distal lobes slightly emarginate on inner margins 1.3 x 0.7 - 0.8 cm;dorsal auricle short,globular. Capsules turgid in middle, acute, 1.5 - 2 cm long.

Fl. & Fr. Nov. - Dec.

Distrib. W . Bengal, Assam, Arunachal Pradesh, Nagaland, Manipur and Meghalaya.

Bhutan and Bangladesh.

Chromosome no. 2n = 14 (Khoshoo, T.N. in Proc. Indian Acad. Sci. sect. B. 63: 38 - 45. 1966); 2n = 16 (Sarkar, A. K. et al. in Taxon 22: 647 - 654. 1973 & in Taxon 29: 347 - 367. 1980).




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