Botanical Survey of India | Flora of India

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Impatiens thomsonii Hook. f. in J. Linn. Soc., Bot. 4. 128. 1860; Hook. f., Fl. Brit. India 1: 469. 1875, in Bot. Mag. t. 7795. 1901& in Rec. Bot. Surv. India 4: 5. 1904; Collett, Fl. Siml. 73. 1902; Blatter, Beaut. Fl. Kashmir 1: 73. 1927.


Herbs, annual, 30 - 60 cm high, glabrous; stems branched. Leaves opposite below, whorled or alternate above,ovate or lanceolate-elliptic to elliptic-oblong,shortly attenuate at base, acuminate at apex, coarsely serrate along margins with small bristle-like glands on serrations, 6.5 - 17 x 1.5 - 3 cm, pubescent on midnerve; lateral nerves 6 - 8 pairs; stipules pulvinate, glandular. Flowers in umbels, 0.8 - 1.5 cm long, pale-pink or crimson; bracts linear-lanceolate, 2 - 5 mm long; peduncle axillary, erect, 2 - 9 cm long, glabrous; pedieels up to 1.8 cm long. Lateral sepals ovate to ovate-lanceolate, 3 - 5 x 2 - 4 mm, with an appendage. Lip navicular, 0.7 - 1.1 cm long; spotted with brown or yellow; spur abruptly constricted, filiform, up to 5 mm long. Standard suborbicular-obcordate, emarginate, 0.5 - 0.8 x 0.8 - 1 cm. Wings bilobed, 1.2 - 1.4 cm long; basal lobes triangular-ovate, 5 - 6 x 4 - 5 mm, with an appendage; distal lobes ligulate, oblanceolate, 7 - 8 x 3 - 4 mm. Capsules clavate, 0.5 -2 cm long.



KEY TO THE VARIETIES


1a. Spur of lip up to 6 mm long 27.2. thomsonii
b. Spur of lip absent 27.1. ecalcarata


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