Botanical Survey of India | Flora of India

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Impatiens verticillata Wight in Madras J. Lit. Sci. ser. 1. 5: 15. 1837; Hook. f., Fl. Brit. India 1: 452. 1874.


Herbs or undershrubs up to 60 cm high; stems branching in lower half, swollen at joints. Leaves opposite or in whorls of 3 - 6, elliptic or elliptic-lanceolate, acuminate, crenate-serrulate along margins, 6 - 12 x 1.2 - 2.2 cm; petioles 0.5 - 1.5 cm long. Flowers in 3-to many-flowered subumbels, scarlet-red; peduncles up to 4 cm long; pedicels 0.7 - 2 cm long. Lateral sepals linear-lanceolate, 0.8 - 1 cm long. Lip cymbiform; spur slender, curved, 2.5 - 3.5 cm long. Standard cucullate, ca 1 x 1.2 cm. Wings bilobed, clawed, up to 2.8 cm long; lobes oblong-obovate, with hairs on dorsal keels. Capsules fusiform, 0.8 - 1.2 cm long, many-seeded; seeds 2.5 mm long, brown, hairy at pointed end.

Fl. & Fr. Nov.

Distrib. India: Southern W. Ghats in gravelly beds near streams between 900 - 1500 m. Tamil Nadu and Kerala.

Endemic.

Chromosome no. 2n = 16 (Virendra Kumar & Subramaniam, Chr. Atlas Fl. Pl. Ind. Subc. 1: 87. 1986).




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