Botanical Survey of India | Flora of India

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Impatiens acmanthera Hook. f. in Rec. Bot. Surv. India 4: 17. 1905.


Herbs, annual, glabrous. Leaves petiolate, oblong-elliptic to narrowly elliptic, cuneate at base, long-acuminate at apex, subentue or serrulate along margins with scarce filiform appendages: 3 - 5.4 x 0.8 - 1.5 cm, finely pubescent above and beneath; lateral nerves 5 - 8 pairs. Flowers solitary, borne on upper part of stem, blue; pedicels slender, 1.5 - 2 cm long, pubescent; bracts linear, ca 3 mm long. Lateral sepals ovate, 4 - 6 x 2.5 - 4 mm Lip shallowly navicular, ca 8 mm long, constricted into a curved spur; spur 1 - 1.2 cm long. Standard obcordate to suborbicular, shallowly emarginate, ca 6 mm long. Wings: distal and basal lobes separated by a depression; basal lobes ovate; distal lobes semielliptic, entire; dorsal auricle present, 1 - 2 mm long. Capsules linear.

Fl. & Fr. Sept. - Nov.

Distrib. India: E. Himalayas, ca 800 m. Sikkim.

Endemic.

Chromosome no. 2n = 18, 20 (Chatterjee, A.& A.K. Sharma in Nucleus 13: 179 - 200. 1970).




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