Dicoma arenaria Bremek.

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Common names:
Status: Native
A low-growing, suberect or decumbent perennial herb, up to c. 25 cm high or c. 50 cm. in diameter, with several greyish woolly stems growing from a woody taproot. Leaves spathulate, mostly 15–40 mm long, obscurely 3-veined from the base, greyish woolly on both surfaces but more densely so beneath; margins subserrate with callose-tipped teeth, often wavy. Capitula few to many, solitary and terminal on branches or very short shoots, sessile and axillary with several subtending leaves. Involucres mostly 15–20 mm long, spreading up to 30 mm wide. Bracts numerous, with narrow membranous margins, more or less sparsely woolly; outer bracts from c. 5 mm. long and spine-like; inner bracts linear-lanceolate, to c. 20 mm long. florets c. 8 mm long, funnel-shaped with long linear lobes, creamy-white; achenes narrowly turbinate, c. 3 mm long, c. 10-ribbed, long appressed-setose between the ribs; pappus 2-seriate, the outer of c. 10 slender barbellate setae 7–10 mm. long, the inner of 6–7 broadly membranous winged scale-like setae c. 7 mm. long.
Derivation of specific name:
Habitat: In grassland in sandy areas and on stony outcrops.
Flowering time:
Worldwide distribution: Northern Botsawana and Soutpansberg, area South Africa.
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

Pope, G.V. (1992). Compositae Flora Zambesiaca 6(1) Page 41.

Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 32.

van der Walt, R. (2009). Wild Flowers of the Limpopo Valley Retha van der Walt, Musina, South Africa Page 27. (Includes a picture).

Other sources of information about Dicoma arenaria:

External websites:

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

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: Dicoma arenaria.
https://www.botswanaflora.com/speciesdata/species.php?species_id=219960, retrieved 21 May 2024

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