Bidens biternata (Lour.) Merr. & Sherff

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Bidens biternata

Photo: Bart Wursten
Cleveland Dam, area below dam wall

Bidens biternata

Photo: Bart Wursten
Cleveland Dam, area below dam wall

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Synonyms: Bidens cylindrica Sherff
Common names: Yellow-flowered blackjack (English)
Frequency:
Status: Possibly native?
Description:
Erect annual herb, up to 1 m. It can be distinguished by the leaves, which are usually 5-7 foliolate, the basal pair sometimes further divided. The flowers are yellow, including the ray-florets. In B. pilosa, the leaves are 3-foliolate and the ray-florets, if present, are white. B. biternata is much less frequent in occurrence.
Notes:
Derivation of specific name:
Habitat: A widespread weed of disturbed and cultivated areas.
Flowering time:
Worldwide distribution: Widespread in tropical and subtropical Africa, Asia and Australia.
Botswana distribution: N
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Content last updated: Monday 4 September 2017
Literature:

Burrows, J.E. & Willis, C.K. (eds) (2005). Plants of the Nyika Plateau Southern African Botanical Diversity Network Report No. 31 SABONET, Pretoria Page 82.

Chapano, C., Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 6.

Da Silva, M.C., Izidine, S. & Amude, A.B. (2004). A preliminary checklist of the vascular plants of Mozambique. Southern African Botanical Diversity Network Report No. 30 Sabonet, Pretoria Page 146.

Heath, A. & Heath, R. (2009). Field Guide to the Plants of Northern Botswana including the Okavango Delta Kew Publishing Page 204. (Includes a picture).

Mapaura, A. & Timberlake, J. (eds) (2004). A checklist of Zimbabwean vascular plants Southern African Botanical Diversity Network Report No. 33 Sabonet, Pretoria and Harare Page 23.

Phiri, P.S.M. (2005). A Checklist of Zambian Vascular Plants Southern African Botanical Diversity Network Report No. 32 Page 28.

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 31.

Strugnell, A.M. (2006). A Checklist of the Spermatophytes of Mount Mulanje, Malawi Scripta Botanica Belgica 34 National Botanic Garden of Belgium Page 51.

Wild, H. (1967). The Compositae of the Flora Zambesiaca area. 1. Heliantheae. Kirkia 6(1) Pages 25 - 27. also as Bidens cylindrica

Wild, H. (undated, c. 1955). Common Rhodesian Weeds ?Government of Rhodesia, Salisbury Page 63. (Includes a picture).

Other sources of information about Bidens biternata:

Our websites:

Flora of Malawi: Bidens biternata
Flora of Mozambique: Bidens biternata
Flora of Zambia: Bidens biternata
Flora of Zimbabwe: Bidens biternata

External websites:

African Plants: A Photo Guide (Senckenberg): Bidens biternata
Biodiversity Explorer (Biodiversity of southern Africa): Bidens biternata
BHL (Biodiversity Heritage Library): Bidens biternata
EOL (Encyclopedia of Life): Bidens biternata
ePIC (electronic Plant Information Center): Bidens biternata
Flora Zambesiaca web site: Bidens biternata
GBIF (Global Biodiversity Information Facility): Bidens biternata
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Bidens biternata
IPNI (International Plant Names Index): Bidens biternata
Ispot Southern Africa: Bidens biternata
JSTOR Plant Science: Bidens biternata
Kew Herbarium catalogue: Bidens biternata
Mansfeld World Database of Agricultural and Horticultural Crops: Bidens biternata
The Plant List (version 1.1): Bidens biternata
Tropicos: Bidens biternata


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2014-17

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2017). Flora of Botswana: Species information: Bidens biternata.
http://www.botswanaflora.com/speciesdata/species.php?species_id=160610, retrieved 23 September 2017

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