Impatiens glandulifera Royle, Ill. Bot. Himal. Mts. l51. 28, t. 2. 1853; Hook. f. in Bot. Mag. 4020. 1843; H. Hara in H. Hara & Williams, Enum. Fl. Pl. Nepal 2: 78. 1979. I. roylei Walpers, Rep. Bot. Syst. 1: 475. 1842; Hook. f., Fl. Brit. India 1: 468. 1875 & in Rec. Bot. Surv. India 4: 5. 1904.

Herbs, perennial, 1 - 2 m high; stems erect, simple or branched, glabrous, succulent. Leaves opposite or ternate, elliptic, lanceolate or oblong, rounded to gradually attenuate towards base, acute to long-acuminate at apex, crenate-serrate along margins, teeth with filiform appendages, 6.2 - 15 x 2.5 - 7 cm, finely pubescent or glabrous; lateral nerves 7 - 9 pairs; petiole glabrous, 1.5 - 5 cm, glandular; stipules stout, gland-tipped. Flowers 3.3 - 3.8 cm, in subterminal umbels or racemes, pale-pink or dark-crimson; peduncles stout, up to 9 cm long; bracts ovate-lanceolate, long-acuminate, 4 - 8 mm long; pedicels slender, 05 - 3 cm long, glabrous. Lateral sepals ovate, 5 - 8 x 3 - 5 mm, with ca 1 mm long appendage. Lip bucciniform, 1.2 - 2 x 1 - 1.7 cm, mouth with an appendage; spur suddenly constricted, filiform, incurved, 3 - 5 mm long. Standard suborbicular, 1 x 1.6 cm. Wings bilobed, ca 2.5 cm long; basal lobes about one-third the size of distal, rounded; distal lobes elliptic-oblong, obtuse, 1.3 - 1.6 x 0.6 - 0.8 cm. Capsules obovate, 0.4 - 1.3 x 0.2 - 0.8 cm, beaked; beak ca 1 cm long.

Fl. & Fr. July - Sept.

Distrib. India: W. Himalayas in damp places and along streams 2000 - 3000 m. Jammu & Kashmir, Himachal Pradesh and Uttar Pradesh (Kumaon) and Mizoram.

Nepal and Pakistan.

Chromosome no. 2n = 18 (Javur Kuva, V. in Taxon 28: 703 - 730. 1979).

Notes. All three varieties of this species erected by J. D. Hooker (Fl. Brit. India 1: 469. 1875) namely var. moschata, var. candida and var. macrochila have been subsequently clubbed by himself (Rec. Bot. Surv. India 4: 7. 1904.