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Compositae
Beentje, H.J. & Ghazanfar, S.A. (eds.) (2005) Compositae (Part 3) Flora of Tropical East Africa
Beentje, H.J. (ed.) (2000) Compositae (Part 1) Flora of Tropical East Africa
Beentje, H.J. (ed.) (2002) Compositae (Part 2) Flora of Tropical East Africa
Pope, G.V. (1992) Compositae Flora Zambesiaca 6(1)
Herbs, suffrutices, shrubs or (rarely) climbers or trees. Leaves alternate, less often opposite. Stipules 0, but false stipules occur in a few species (for example: Vernonia myriantha and Senecio deltoideus) . Flowers small (florets), aggregated into heads (capitula) and simulating single larger flowers and surrounded by a calyx-like involucre of one or more series of bracts (phyllaries). Receptacle of the head expanded, with or without receptacular scales or bristles each subtending a floret. Florets all similar sexually (head homogamous) or central and marginal florets differing (head heterogamous) and then the central florets usually bisexual or rarely male, the outer female or rarely neuter. Calyx never typically herbaceous but represented by a pappus of numerous simple or feathery (plumose) hairs, or a smaller number of membranous scales, teeth or bristles, or by a continuous membranous ring; sometimes 0. Worldwide: 1,528 genera and 22,750 species, cosmopolitan, excluding Antarctica. DRC: 12 genera and 18 taxa. |
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Genus | Content |
Ageratum L. | Description |
Bidens L. | Description |
Centaurea L. | Description |
Crassocephalum Moench. | Description |
Enydra Lour. | Description |
Gynura Cass. | Description, Image |
Helichrysum Mill. | Description |
Solanecio (Sch. Bip.) Walp. | Description |
Tagetes L. | Description |
Tithonia Desf. ex Juss. | Description |
Tridax L. | Description |
Vernonia Schreb. | Description |
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