Botanical Survey of India | Flora of India

JSP Page

Herbs, shrubs or trees. Leaves alternate or in a basal rosette, entire or toothed. Inflorescence a solitary head or heads, paniculate or corymbose. Heads heterogamous (outer florets female and disc florets bisexual or mixed with functionally male) or sometimes homogamous (florets all bisexual and corolla bilabiate), rarely completely unisexual (dioecious). Involucral bracts imbricate, in 2 or more series. Receptacle naked, flat or convex. Outer florets ligulate, 3- lobed; inner tubular, 5-lobed. Anther bases tailed or sagittate. Style branches rounded or truncate without a ring of hairs below the point of bifurcation. Achenes columnar or fusiform, ribbed. Pappus abundant, setose or plumose.

The Mutisieae is a tropical or neotropical tribe with a great concentration of genera and species in mountainous and arid regions. The tribe is of recent evolution, although there is no clear idea about the origin of the tribe. The tribe is thought to have been derived from Cynareae or Heliantheae or even from Senecioneae. A polyphyletic origin of the tribe is also possible.

S. America, Africa, Asia; ca 55 genera and over 500 species, 9 genera and 15 species in India.

Literature. HANSEN, H.V. (1985). A taxonomic revision of the genus Gerbera (Compositae. Mutisicae) sections Gerbera, Parva, Piloselloides (in Africa) and Lasiopus. Opera Bot. 78: 1-36. HANSEN. H.V. (1988). A taxonomic revision of the genera Gerbera sect. Isanthus, Leibnitzia (in Africa) and Uechiritzia (Compositae, Mutisieae). Nord. J. Bot. 8: 61-76. JEFFREY C. (1967). Notes on Compositae. H. The Mutisieae East Tropical Africa. Kew Bull. 21: 177-223. POBEDIMOVA, Y.G. (1963). Mutisieae -In Brobov. E.G., S.K. Cherepanov, &. V.L. Komarov. (ed.) Flora USSR 28: 588-598. Moscow.



KEY TO THE GENERA


1a. Scapigerous or subscapigerous herbs 2
b. Not scapigerous 6
2a. Heads subracemose, homogamous; corolla all tubular; pappus hairs feathery 1. Ainsliaea
b. Heads solitary, scapose, usually heterogamous; corolla 2-lipped or ligulate; pappus hairs simple 3
3a. Ray florets little exceeding the involucre; hairs on achenes inflated, apiculate; scape widened below the heads 8. Piloselloides
b. Ray florets (when present) exceeding the involucre; achenes glabrous or with fine, pointed hairs; scape more or less slender throughout 4
4a. Plants with two generations of heads, a vernal, radiate and an autumnal non radiate. cleistogamous heads; staminodes present in ray florets 6. Leibnitzia
b. Plants with one generation of heads; staminodes present. or anthers not or only slightly reduced (but non functional) 5
5a. Heads hemispherical; alveoles of receptacles fimbriate-ciliate; achenes hardly tapeirng, densely silky with long. pointed sericeous hairs 9. Uechtritzia
b. Heads campanulute; alveoles of receptacle with entire margins; achenes tapering, hairy or subglabrous with short, tapering, non sericeous hairs 4. Gerbera
6a. Heads few flowered; flowers all ligulate 2. Catamixis
b. Heads many flowered; flowers all tubular 7
7a. Heads solitary; pappus of 10 spreading bristly scales 5. Hochstetteria
b. Heads corymbose or subsessile on branches; pappus hairy 8
8a. Herbs; involucral bracts spinescent; pappus hairs feathery 3. Dicoma
b. Shrubs or small trees; involucral bracts not spinescent; pappurs hairs simple 7. Leucomeris


JSP Page
  • Search