Impatiens lutea Hook. f. in Rec. Bot. Surv. India 4: 18. 1905.

Herbs, pubescent, particularly in upper portion. Leaves alternate, ovate-lanceolate, lanceolate, abruptly cuneate to gradually attenuate at base, acuminate at apex, shallowly crenate along margins with lower teeth filiform, 3.2 - 7.4 x 1.5 - 2.9 cm, finely pubescent above and beneath; green above and whitish beneath; lateral nerves 5 - 8 pairs; petiole slender, 0.8 - 3.2 cm long, pubescent. Flowers ca 1.5 cm, yellow; bracts ovate, acuminate, 3 - 4 mm. Lateral sepals navicular, 5 - 7 mm long, ca 2 mm deep, pubescent. Lip obliquely navicular, 6 - 8 mm long, spurred; spur abruptly constricted, filiform with coiled apex, 0.8 - 1.2 cm long. Standard suborbicular, ca 8 x 7 mm, strongly nerved. Wings bilobed; basal lobes ovate-triangular, ca 9 x 8 mm; distal lobes suborbicular, ca 1.2 x 1 cm long. Capsules linear.

Fl. & Fr. June - July.

Distrib. India: E. Himalayas, ca 1500 m. Sikkim and Arunachal Pradesh.

Endemic.