Botanical Survey of India | Flora of India

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Herbs, shrubs or climbers; indumentum soft, whitish, cottony or coarsely brownish hirsute or pubescent. Leaves mostly alternate, both radical and cauline or only cauline, entire, variously toothed or pinnatifid. Capitula heterogamous, homogamous, discoid or disciform. Radiate capitula with ray florets yellow t ligulate, female; ligules entire or toothed. Disc florets, pink, white, cream or yellow, hermaphrodite. Involucre of 1 - 2 seriate or multiseriate, equal or unequal imbricate, or valvate bracts; bracts with a few, short, calyculate or ecalyculate bracts, herbaceous or membranous. Receptacle usually flat, epaleaceous or paleaceous. Anther base obtuse or tailed. Style branches of disc florets truncate or appendaged. Achenes usually angular, cylindrical, ribbed, striate, truncate or shortly contracted at the end. Pappus of white, yellow, rustish or red, fine capillary hairs or bristles.

More or less cosmopolitan; ca 50 genera, with over 2000 species, 16 genera and 133 species in India.

Literature. BARKLEY, T.M. (1985). Generic boundaries in the Senccioncae. Taxon 34(1): 17-21. BENTHAM, G. & J.D. HOOKER (1873). Composilae. Gen. Pl. 2: 163-533. CANDOLLE, A.P. DE (1838). Prodromus Syslemaris Naturalis, Vol. VI. CLARKE, C.B . (1876). Compositae Indicae London. JEFFREY C. & Y.L. CHEN (1984). Taxonomic studies on the Tribe Scnecioneae (Compositae) of Eastern Asia. Kew. Bull. 39(2): 1-454. KOYAMA, H. (1968). Taxonomic studies on the Tribe Senecioneae of Eastern Asia 11. "Enumeration of the specics of Eastern Asia". Mem. Foe. Sci. Kyoto Univ. Ser. Biol. 2: 19-60. NORDENSTAM, B. (1978). Senecioneae and Liabeae-Systematic review. In HEYWOOD, V.H., J.B. HARBORNE, & B.L. TURNER (ed.) The Biology & Chemistry of the Compositae Vol. 2: 799-830. NORDENSTAM, B.(1978). Taxonomic studies in the Tribe Senecioneae (Compositae). Opera Botanica 44: 1-83. RYDBERG, P.A. (1924). Some senecioid gener 1. Bull. Torrey Bot. Club 51: 369-378.

Notes. Phylogenetically the tribe Senecioneae is proposed by Small, as the most primitive tribe of the family Asteraceae. Cytologically proposed base number for the tribe is 2n= 10. Economically this tribe has a significant importance in the field of medicine and for the perfumery.



KEY TO THE SUBTRIBES


1a. Involucral bracts multiseriate, imbricate, unequal 2. PSEUDOJACOBINEAE
b. Involucral bracts 1-2-seriate, valvate, equal 2
2a. Style arms of female florets flattened or narrowly clavate, papillose, not hairy all around 3. TUSSILAGINEAE
b. Style arms of female florets truncate or obtuse, penicillate or with a hairy tip 1. EUSENECIONEAE


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