Botanical Survey of India | Flora of India

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Aconitum bisma (Buch.-Ham.) Rapaics in Nov. Kozlem. 6: 164. 1907, p. p.; Fletcher & Lauener in Notes R. Bot. Gard. Edinb. 20: 197, t. 166, f. 1. 1950. Caltha bisma Buch.-Ham. in Edinb. J. Sci. 1: 251. 1824. A. palmatum D. Don, Prodr. Fl. Nep. 196. 1825; Hook. f. & Thomson in Fl. Brit. India 1: 28. 1872. A. ferox subsp.palmatum (D. Don) Bruehl in Ann. R. Bot. Gard. Calc. 5: 111, t. 111, f. 9 - 13, 24, 25 & 31. 1896.


Nep.: Bikuma, Seto-bikoma.

Herbs, biennial; roots paired, tuberous; stems erect, simple, 60 - 150 cm high, stout, hollow, glabrous. Petioles slender, 4 - 10 cm long; lamina obcordate to reniform, up to 15 cm in diam., subglabrous, deeply 5-lobed; segments ovate, cuneate at base, sharply cut. Inflorescence a loose panicle, 10 - 20 cm long; pedicels 4 - 10 cm long. Sepals greenish blue or bluish white; uppermost sepal helmet-shaped, oblique, shortly beaked, ca 2.5 x 1.2 cm; Upper lateral sepals obovate, ca 2 x 1.5 cm; lower lateral sepals elliptic, ca 15 x 7 mm. Petal head S-shaped, 5 - 6 mm long, glabrous; spur bulbous; lamina very short, ca 1 mm long. Nectaries and filaments glabrous. Carpels 5, glabrous. Follicles oblong, 2.5 - 4 cm long, 5 - 6 mm thick, glabrous. Seeds black, obscurely winged with plaited testa.

Fl. June - Aug.; Fr. Sept. - Oct.

Distrib. India: Moist Abies and Rhododendron forests on alpine Himalayas, 2700 - 3200 m. Uttar Pradesh (Garhwal), Sikkim, and Arunachal Pradesh.

Nepal,Bhutan and China (Tibet).

Notes. Extract from the roots of this non-poisonous plant is used medicinally (Stapf, l. c.).

Chromosome no. 2n = 48 (Banerjee & Sharma in Form, Str. & Funct. in Plants, Meerut, 1975).




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