Botanical Survey of India | Flora of India

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Impatiens flaccida Arn. in Companion Bot. Mag. 1: 322. 1836; Hook. in Bot. Mag. 87: t. 5276. 1861; Hook. f., Fl. Brit. India 1: 457. 1874, excl. syn. I. bipartita Arn. & I. floribunda Wight.


Erect or decumbent herbs up to 50 cm high; stems slender, sparingly branched in lower half, green or flushed with pink, rooting at lower nodes. Leaves alternate, ovate-lanceolate or lanceolate-elliptic, crenate, 3 - 8 x 1.2 - 3.5 cm, sparsely pubescent; petioles 1.2 - 3.5 cm long with stipitate glands. Flowers solitary or in fascicles of 2 - 3, pale to deep pink; pedicels 2 - 3 cm long; bracts inconspicuous. Lateral sepals ovate. Lip 8 - 10 mm long; spur 1.5 - 2.5 cm long, filiform or slender, incurved. Standard obcordate with a keel on dorsal side terminating into an acute point. Wings 2-lobed. Capsules ca 1.5 cm long, ellipsoid, glabrous; seeds globose, glabrous or papillose.

Fl. & Fr. July - Dec.

Distrib. India: W. Ghats. Karnataka, Tamil Nadu and Kerala.

Sri Lanka.

Notes. This species is closely related to I. floribunda Wight in having 3-colpate radical pollen, crescent-shaped epidermal flangs and minutely puberulous capsules (Bhaskar & Razi 1978).

Chromosome no. 2n = 14. (Jones and Smith in Kew Bull. 20: 64. 1966).




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