Acmella radicans (Jacq.) R.K. Jansen
var. radicans
All images: Click on each image to see a larger version and details of the record View selected images
Picture: Mark Hyde
National Botanic Garden, Harare
Picture: Mark Hyde
National Botanic Garden, Harare
Picture: Mark Hyde
National Botanic Garden, Harare
North Luangwa NP
may 2010
Photo: Mike Bingham
Lusaka, Protea Hill Farm
May 2010
Photo: Mike Bingham
Picture: Ian Riddell
Newlands Vlei, Harare
Picture: Mark Hyde
Westminster Avenue, near junction with Suffolk Road
Picture: Mark Hyde
Westminster Avenue, near junction with Suffolk Road
Picture: Bart Wursten
Fuel Station, Rumphi.
Picture: Bart Wursten
Fuel Station, Rumphi.
Picture: Bart Wursten
Fuel Station, Rumphi.
Picture: Jan Van Bel
Ridgeview, Harare
Picture: Mark Hyde
Goodrington Drive, near junction with Glencairn Drive, Sunnridge
Picture: Mark Hyde
National Botanic Garden, Harare
Picture: Mark Hyde
East Road, by Reps Theatre
Species details: Click on each item to see an explanation of that item (Note: opens a new window)
Synonyms:
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Spilanthes radicans Jacq.
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Common names:
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Frequency:
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Status:
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Naturalized, introduced; not cultivated |
Description:
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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. |
Type location:
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Venezuela |
Notes:
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This species was rare, in Lusaka at least, when I first recorded it in a maize field in 1991. It has since become one of the most widespread and common ruderals in the country, often exceeding Ageratum conyzoides in abundance. |
Derivation of specific name:
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radicans: rooting at the nodes. |
Habitat:
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Road drains, footpaths, fallow land. |
Altitude range: |
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Flowering time: | Fl. Apr-Jul |
Worldwide distribution:
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Native of Central and South America, becoming a widespread weed. |
Zambian distribution (Flora Zambesiaca):
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N,W,C,S |
Zambian distribution (Provinces):
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Nw,N,Mc,Lk,S |
Growth form(s):
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Endemic status:
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Red data list status:
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Insects associated with this species:
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Spot characters:
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Display spot characters for this species |
Content last updated: |
Thursday 6 April 2017 |
Literature:
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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)
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Other sources of information about Acmella radicans var. radicans:
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Acmella radicans var. radicansFlora of Zimbabwe:
Acmella radicans var. radicansExternal websites:
African Plants: A Photo Guide (Senckenberg):
Acmella radicansBHL (Biodiversity Heritage Library):
Acmella radicansEOL (Encyclopedia of Life):
Acmella radicansGBIF (Global Biodiversity Information Facility):
Acmella radicansGoogle:
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ScholariNaturalist:
Acmella radicansIPNI (International Plant Names Index):
Acmella radicansJSTOR Plant Science:
Acmella radicansMansfeld World Database of Agricultural and Horticultural Crops:
Acmella radicansPlants of the World Online:
Acmella radicansTropicos:
Acmella radicansWikipedia:
Acmella radicans
Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-24
Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A.
(2024).
Flora of Zambia: Species information: Acmella radicans var. radicans. https://www.zambiaflora.com/speciesdata/species.php?species_id=212680, retrieved 4 May 2024
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