Asteraceae-Sunflower family
The sunflower family, asteraceae, 1,528 genera and 22,750 species worldwide.
Description of the family:
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.Corolla composed of (3-)5 united petals fused into a tube below and with a distal limb consisting of either: (1) 5 actinomorphic lobes or teeth (tubular florets); or (2) a unilateral strap-shaped limb (ray) 0-3(-4)-dentate at the apex; or (3) a unilateral strap-shaped limb (ligule), 5-dentate at the apex.Stamens 5, borne on the corolla-tube; anthers usually fused into a cylinder around the style. Ovary inferior, 1-celled, with 1 basal ovule; style single below but branching above into 2 stigmatic arms. Fruit an achene, crowned by the pappus, sometimes with a slender beak interposed between them.
Worldwide:
1,528 genera and 22,750 species, cosmopolitan, excluding Antarctica.
Zimbabwe:
130 genera and 438 taxa.
- Acanthospermum Schrank
- Achillea L.
- Achyrocline (Less.) DC.
- Acmella Rich. Image
- Adenostemma J.R. Forst. & G. Forst.
- Ageratina Spach
- Ageratum L.
- Ambrosia L.
- Anisopappus Hook. & Arn.
- Arctotis L.
- Artemisia L.
- Artemisiopsis S. Moore
- Aspilia Thouars
- Aster L.
- Athrixia Ker Gawl.
- Athroisma DC.
- Berkheya Ehrh.
- Bidens L.
- Blainvillea Cass.
- Blumea DC.
- Bothriocline Oliv. ex Benth.
- Brachylaena R. Br.
- Calostephane Benth.
- Calyptocarpus Less. Image
- Centaurea L.
- Centratherum Cass.
- Chromolaena DC.
- Chrysanthellum Rich.
- Chrysanthemoides Fabr.
- Cichorium L.
- Cineraria L.
- Conyza Less.
- Coreopsis L.
- Cosmos Cav.
- Cotula L.
- Crassocephalum Moench.
- Crepis L.
- Dahlia Cav.
- Denekia Thunb.
- Dichrocephala L’Hér. ex DC.
- Dicoma Cass.
- Dimorphotheca Moench
- Distephanus Cass.
- Doellia Sch. Bip.
- Eclipta L.
- Elephantopus L.
- Emilia (Cass.) Cass.
- Enydra Lour.
- Erigeron L.
- Erlangea Sch. Bip.
- Erythrocephalum Benth.
- Ethulia L.f.
- Euryops (Cass.) Cass.
- Felicia Cass.
- Flaveria Juss.
- Galinsoga Ruiz. & Pav.
- Gazania Gaertn.
- Geigeria Griess.
- Gerbera Cass.
- Gnaphalium L.
- Grangea Adans.
- Guizotia Cass.
- Gutenbergia Sch. Bip.
- Haplocarpha Less.
- Helianthus L.
- Helichrysum Mill.
- Hirpicium Cass.
- Hypericophyllum Steetz
- Hypochaeris L.
- Inula L.
- Inulanthera Källersjö
- Kleinia Mill.
- Lactuca L.
- Laggera Benth.
- Launaea Cass.
- Leontodon L.
- Litogyne Harv.
- Lopholaena DC.
- Macledium Cass.
- Melanthera Rohr
- Microglossa DC.
- Mikania Willd.
- Mikaniopsis Milne-Redh.
- Montanoa Cerv.
- Neojeffreya Cabrera
- Nicolasia S. Moore
- Nidorella Cass.
- Nolletia Cass.
- Osteospermum L.
- Othonna L.
- Parthenium L.
- Pechuel-Loeschea O. Hoffm.
- Pegolettia Cass. D
- Pentanema Cass.
- Pentzia Thunb.
- Philyrophyllum O. Hoffm.
- Phymaspermum Less.
- Picris L.
- Pleiotaxis Steetz
- Pluchea Cass.
- Porphyrostemma Benth. ex Oliv.
- Pseudoconyza Cuatrec.
- Pseudognaphalium Kirp.
- Psiadia Jacq.
- Pulicaria Gaertn.
- Santolina L.
- Schistostephium Less.
- Schkuhria Roth
- Sclerocarpus Jacq.
- Senecio L.
- Sigesbeckia L.
- Solanecio (Sch. Bip.) Walp.
- Sonchus L.
- Sphaeranthus L.
- Sphagneticola O. Hoffm.
- Spilanthes Jacq.
- Stoebe L.
- Stomatanthes R.M. King & H. Rob.
- Tagetes L.
- Taraxacum F.H. Wigg.
- Tarchonanthus L.
- Tithonia Desf. ex Juss.
- Tolpis Adans.
- Tridax L.
- Ursinia Gaertn.
- Verbesina L.
- Vernonanthura H. Rob.
- Vernonia Schreb.
- Xanthium L.
- Zinnia L
