Blainvillea gayana Cass.

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Blainvillea gayana

Photo: Bart Wursten
Shashe Wilderness Camp, Shashe River

Blainvillea gayana

Photo: Bart Wursten
Shashe Wilderness Camp, Shashe River

Blainvillea gayana

Photo: Bart Wursten
Shashe Wilderness Camp, Shashe River

Blainvillea gayana

Photo: Bart Wursten
Shashe Wilderness Camp, Shashe River

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Species details: Click on each item to see an explanation of that item (Note: opens a new window)

Synonyms: Blainvillea rhomboidea sensu Oliv. & Hiern
Wedelia gossweileri S. Moore
Common names:
Status: Native
Erect annual herb. Stems covered in rough hairs. Leaves (sub)opposite, elliptic to ovate with a rather long pointed tip, up to 13 × 8 cm, 3-veined from the base, sparsely hairy; margin serrate-crenate. Capitula somewhat long and narrow, c. 1.2 × 0.5 cm. Involucral bracts c. 1 cm long, oblong-elliptic, hairy and glandular on the outside. Florets whitish, sometimes with short, inconspicuous 2-3-toothed rays.
Notes: Beentje, Jeffrey & Hind in FTEA Compositae 3: 737 (2005) treat Blainvillea gayana as conspecific with B. acmella (L.) Phillipson but this does not seem to be universally accepted.
Derivation of specific name: gayana: after Claude Gay, 1800-1873, French natural historian.
Habitat: A weed of disturbed areas and cultivation, mostly growing in shaded areas.
Flowering time:
Worldwide distribution: Widespread in tropical Africa.
Botswana distribution:
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species

Beentje, H.J. & Ghazanfar, S.A. (eds.) (2005). Compositae (Part 3) Flora of Tropical East Africa Pages 735 - 737. as Blainvillea acmella (Includes a picture).

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

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.

Wild, H. (1967). The Compositae of the Flora Zambesiaca area. 1. Heliantheae. Kirkia 6(1) Pages 38 - 39.

Other sources of information about Blainvillea gayana:

Our websites:

Flora of Mozambique: Blainvillea gayana
Flora of Zambia: Blainvillea gayana
Flora of Zimbabwe: Blainvillea gayana

External websites:

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

Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2014-24

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2024). Flora of Botswana: Species information: Blainvillea gayana., retrieved 22 June 2024

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