Botanical Survey of India | Flora of India

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Impatiens bicolor Royle, Ill. Bot. Himal. Mts. 151. t. 28. 1834; Hook. f. in Rec. Bot. Surv. India 4: 5. 1904. l. amphorata Edgew. var. umbrosa (Edgew.) Hook. f., Fl. Brit. India 1: 476. 1875. l. amphorata Edgew. & l. umbrosa Edgew. in Trans. Linn. Soc. London 20: 39. 1846.


Herbs, glabrous, 30 - 90 cm high; stems branched. Leaves alternate, ovate-elliptic to elliptic-oblong, acuminate at apex, attenuate towards base, crenate along margins, crenations with poorly developed filiform appendages, 15 - 25 x 8 - 15 cm, green above, paler beneath, finely pubescent on both surfaces; lateral nerves 6 - 10 pairs; petioles long, stipular glands present. Flowers aggregated on top of peduncles, rose and yellow with red nerves; bracts at base of pedicels, linear, 2 - 3 mm long. Peduncles long, glabrous; pedicels slender, small, glabrous. Lateral sepals obliquely ovate, to orbicular-obovate, with a short appendage, 3 - 7 x 2 - 5 mm. Lip bucciniform, 1.1 - 1.5 x 1.2 - 1.3 cm long, abruptly constricted into spur; spur filiform, slightly curved, 0.9 - 2 cm long. Standard orbicular, dorsally keeled, ca 0.9 x 1 cm. Wings 1.3 - 2 cm long; basal lobes ovate to triangular ovate, 5 - 7 x 4 - 5 mm; distal lobes oblong with a lobulate tip, 0 - 8 x 3 - 4 mm; basal auricle small. Capsules linear, subtorulose, acute, 1.1 - 2.2 cm long; seeds rugose.

Fl. & Fr. Aug. - Sept.

Distrib. India: W. Himalayas. On shady slopes between 1600 - 2500 m. Jammu & Kashmir, Himachal Pradesh, Punjab and Uttar Pradesh (Kumaon).

Nepal and Pakistan.

Notes. Two varieties of I. amphorata Edgew., viz. umbrosa and pallens treated by Hook. f. (Fl. Brit. India 1: 476. 1875) have been merged by himself (Rec. Bot. Surv. India 4: 8. 1904) under I. bicolor.

Chromosome no. 2n = 14 (Virendra Kumar & Subramaniam, Chr. Atlas Fl. Pl. Ind. Subc. 1: 84. 1986).




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