Botanical Survey of India | Flora of India

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Caltha palustris L., Sp. Pl. 558. 1753; Hook. f. & Thomson in Fl. Brit. India 1: 21. 1872. C. govaniana Wallich [Cat. 167. no. 4710. 1831, nom. nud.] ex Royle, Illus. Bot. Himal. 54. 1834.


Perennial, often forming extensive tufts; rootstock thick, tuberous, creeping, densely fibrous rooted; stems 10 - 60(-80) cm, erect, robust, hollow, branched. Leaves deltoid, reniform, deeply cordate at base, sharply crenate-dentate along margins, obtuse at apex, 3 - 12(-15) cm across, glabrous; radical leaves with 8 - 30(-60) cm long petioles; cauline leaves alternate, sessile or subsessile or with very short petioles, clasping the stems. Peduncles up to 80 cm high, with 1 or few or up to 25 flowers in corymbs. Flowers few, 2.5 - 5 cm across, bright yellow or pink. Sepals 5 - 8, petaloid, oblong-ovate, elliptic or broadly obovate, obtuse or rarely subacute, 12 - 15 x 3 - 20 mm. Stamens many, usually more than 40; filaments filiform; anthers rather large. Carpels 10 or more, free, linear-oblong; style continuous, straight; stigma entire or slightly bilobed. Follicles sessile, elongate-oblong, flattened with hard surfaces and transverse ridges, 6 - 18 x 3 - 5 mm, bearing straight 1.5 - 3 mm long beak, which is slightly curved at apex; seeds many, ovoid, constricted in middle, black.



KEY TO THE VARIETIES


1a. Flowers white 1.1. alba
b. Flowers yellow or magenta-pink or purple 2
2a. Flowers yellow, several on each peduncle 1.2. palustris
b. Flowers magenta-pink, one per peduncle 1.3. purpurea



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