Acmella radicans (Jacq.) R.K. Jansen
var. radicans

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Acmella radicans var. radicans

Photo: Mark Hyde
National Botanic Garden, Harare

Acmella radicans var. radicans

Photo: Mark Hyde
National Botanic Garden, Harare

Acmella radicans var. radicans

Photo: Mark Hyde
National Botanic Garden, Harare

Acmella radicans var. radicans

Photo: Mike Bingham
North Luangwa National Park

Acmella radicans var. radicans

Photo: Mike Bingham
Lusaka SE 13km., Protea Hill Farm.

Acmella radicans var. radicans

Photo: Ian Riddell
Newlands Vlei, Harare

Acmella radicans var. radicans

Photo: Mark Hyde
Westminster Avenue, near junction with Suffolk Road

Acmella radicans var. radicans

Photo: Mark Hyde
Westminster Avenue, near junction with Suffolk Road

Acmella radicans var. radicans

Photo: Bart Wursten
Fuel Station, Rumphi.

Acmella radicans var. radicans

Photo: Bart Wursten
Fuel Station, Rumphi.

Acmella radicans var. radicans

Photo: Bart Wursten
Fuel Station, Rumphi.

Acmella radicans var. radicans

Photo: Jan Van Bel
Ridgeview, Harare

Acmella radicans var. radicans

Photo: Mark Hyde
Goodrington Drive, near junction with Glencairn Drive, Sunnridge

Acmella radicans var. radicans

Photo: Mark Hyde
National Botanic Garden, Harare

Acmella radicans var. radicans

Photo: Mark Hyde
East Road, by Reps Theatre

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

Synonyms: Spilanthes radicans Jacq.
Common names: White spot-flower (English)
Frequency: Rare
Status: Introduced and naturalised
Description:
Annual herb 6-30 cm tall (exceptionally to 2.8 m tall per Ian Riddell); stems erect to ascending, rarely rooting at the nodes, green to purple, glabrous to pilose. Leaves ovate to narrowly ovate, 1-8 cm long, 1-5 cm wide, base attenuate, margins denticulate to dentate, apex acute, glabrous to sparsely pilose, and with hispid margins, petiole 4-37 mm long. Capitula solitary or in groups of 2-3, long-stalked, elongate-conical, discoid, 6-11 mm long, 5-9 mm in diameter; phyllaries 6-9, 2-seriate, 4-7 mm long. Disc florets many, greenish white or white, 1.6-2 mm long. Achenes black, 2-2.7 mm long, ciliate; pappus of 2-3 unequal bristles 0.4-1.6 mm long.
Notes: First recorded in Harare in the National Botanic Garden in May 2013. It has since been found in various parts of the city with increasing frequency from 2017 onwards, but so far (2022) only known in Zimbabwe from Harare and Victoria Falls.
Derivation of specific name: radicans: rooting at the nodes.
Habitat: in disturbed ground and areas of former cultivation, often on roadside verges.
Altitude range: (metres)
Flowering time:Fl. Apr-Jul
Worldwide distribution: Native of Central and South America, becoming a widespread weed.
Zimbabwe distribution: W,C
Growth form(s):
Endemic status:
Red data list status:
Insects associated with this species:
Spot characters: Display spot characters for this species
Literature:

Beentje, H.J. & Ghazanfar, S.A. (eds.) (2005). Compositae (Part 3) Flora of Tropical East Africa Page 733.

Jansen, R.K. (1985). Acmella radicans (Jacq.) Syst. Bot. Monogr. 8 (69)


Other sources of information about Acmella radicans var. radicans:

Our websites:

Flora of Malawi: Acmella radicans var. radicans
Flora of Zambia: Acmella radicans var. radicans

External websites:

African Plants: A Photo Guide (Senckenberg): Acmella radicans
BHL (Biodiversity Heritage Library): Acmella radicans
EOL (Encyclopedia of Life): Acmella radicans
ePIC (electronic Plant Information Center): Acmella radicans
Flora Zambesiaca web site: Acmella radicans
GBIF (Global Biodiversity Information Facility): Acmella radicans
Google: Web - Images - Scholar
GRIN (Germplasm Resources Information Network): Acmella radicans
iNaturalist: Acmella radicans
IPNI (International Plant Names Index): Acmella radicans
JSTOR Plant Science: Acmella radicans
Kew Herbarium catalogue: Acmella radicans
Mansfeld World Database of Agricultural and Horticultural Crops: Acmella radicans
Plants of the World Online: Acmella radicans
Tropicos: Acmella radicans
Wikipedia: Acmella radicans


Copyright: Mark Hyde, Bart Wursten, Petra Ballings and Meg Coates Palgrave, 2002-22

Hyde, M.A., Wursten, B.T., Ballings, P. & Coates Palgrave, M. (2022). Flora of Zimbabwe: Species information: Acmella radicans var. radicans.
https://www.zimbabweflora.co.zw/speciesdata/species.php?species_id=212680, retrieved 28 November 2022

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