9237.000 Bidens L.

Beentje, H.J. & Ghazanfar, S.A. (eds.) (2005) Compositae (Part 3) Flora of Tropical East Africa

Tadesse, M. (1993) An Account of Bidens (Compositae: Heliantheae) for Africa Kew Bulletin 48(3) 437-516

Wild, H. (1967) The Compositae of the Flora Zambesiaca area. 1. Heliantheae. Kirkia 6(1) 1-62

Description of the genus

Annual or perennial herbs. Leaves opposite, divided or compound, namely 2-3-pinnatisect, 3-foliolate or pinnate. Leaflets or lobes varying from linear to broadly ovate. Capitula usually radiate. Phyllaries in 2 series; outer herbaceous, inner usually scarious. Receptacular scales present. Ray florets neuter, sometimes 0; disk florets bisexual. Rays yellow, orange, golden, white or 0. Achenes bilaterally flattened or 3-4(-5)-angled, linear to broadly obovate; margin often thickened or winged. Pappus of 0-5 barbed (forwardly or backwardly) bristles.

Worldwide: 340 species, cosmopolitan, most in the New World but 63 species in Africa.

Zimbabwe: 10 taxa.

Bidens pilosa

Links to taxa:     View: living plant images - herbarium specimen images - all images for this genus

SpeciesFZ divisionsContent
bipinnata L.W,C,E,SDescription, Image
biternata (Lour.) Merr. & SherffN,W,C,E,SDescription, Image
kilimandscharica (O. Hoffm.) SherffC,EDescription
kirkii (Oliv. & Hiern) SherffN,C,S
oblonga (Sherff) Wild?
oligoflora (Klatt) Wild?
pilosa L.N,W,C,E,SDescription, Image
schimperi Sch. Bip.N,W,C,E,SDescription, Image
sp.no.1 (P. Gonde HPG 406)W
steppia (Steetz) Sherff var. steppia N,C,E,S

Other sources of information about Bidens:

Our websites:

Flora of Botswana: Bidens
Flora of Caprivi: Bidens
Flora of Caprivi: cultivated Bidens
Flora of Malawi: Bidens
Flora of Mozambique: Bidens
Flora of Zambia: Bidens
Flora of Zimbabwe: cultivated Bidens

External websites:

African Plants: A Photo Guide (Senckenberg): Bidens
BHL (Biodiversity Heritage Library): Bidens
EOL (Encyclopedia of Life): Bidens
GBIF (Global Biodiversity Information Facility): Bidens
Google: Web - Images - Scholar
iNaturalist: Bidens
IPNI (International Plant Names Index): Bidens
JSTOR Plant Science: Bidens
Mansfeld World Database of Agricultural and Horticultural Crops: Bidens
Plants of the World Online: Bidens
Tropicos: Bidens
Wikipedia: Bidens

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Zimbabwe: Genus page: Bidens.
https://www.zimbabweflora.co.zw/speciesdata/genus.php?genus_id=1532, retrieved 23 June 2024

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