Berkheya radula (Harv.) De Wild.

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Photo: Bart Wursten
Ballantyne Park, Harare

Photo: Bart Wursten
Along Zvishavane - Mbalabala road

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Synonyms:	Berkheya adlamii Hook. f. Stobaea radula Harv.
Common names:	Sun daisy (English)
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Description:	Robust, prickly perennial herb, up to 1 m. Stems annual, simple or branched in the upper part, covered in irregular spiny wings and glandular hairs. Leaves mainly in a basal rosette, linear-elliptic, green and rough above, covered in white felt below. The margins are coarsely serrulate-dentate with spines on the apices of the teeth and smaller spines in between. Capitula terminal, solitary on the stems and branches, ray-florets yellow; disk-florets darker orange-yellow. Involucral bracts spiny.
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Botswana distribution:
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Spot characters:	Display spot characters for this species
Literature:	Chapano, C. & Mugarisanwa, N.H. (2003). Plants of the Matobo District National Herbarium and Botanic Garden, Zimbabwe Page 6. Fabian, A. & Germishuizen, G. (1982). Transvaal Wild Flowers. Macmillan, Johannesburg. Pages 266 - 267. (Includes a picture). Fabian, A. & Germishuizen, G. (1997). Wild Flowers of Northern South Africa. Fernwood Press, Vlaeburg. Page 424. (Includes a picture). Kirby, G. (2013). Wild Flowers of Southeast Botswana Struik Nature, Cape Town South Africa Page 131. (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. Pope, G.V. (1992). Compositae Flora Zambesiaca 6(1) Page 241. Rössler, H. (1975). The Compositae of the Flora Zambesiaca area. 5. Subtribe: Gorteriinae. Kirkia 10(1) Page 85. Roessler, H. (1975). The Compositae of the Flora Zambesiaca Area, 5 Subtribe Gorteriinae. Kirkia 10(1) Pages 85 - 86. Setshogo, M.P. (2005). Preliminary checklist of the plants of Botswana. Sabonet Report no. 37. Sabonet, Pretoria and Gaborone Page 31. Van Wyk, B. & Malan, S. (1988). Field Guide to the Wild Flowers of the Witwatersrand and Pretoria Region Struik, Cape Town Page 98. (Includes a picture).

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Flora of Zimbabwe: Berkheya radula

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African Plants: A Photo Guide (Senckenberg): Berkheya radula
African Plant Database: Berkheya radula
BHL (Biodiversity Heritage Library): Berkheya radula
EOL (Encyclopedia of Life): Berkheya radula
GBIF (Global Biodiversity Information Facility): Berkheya radula
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iNaturalist: Berkheya radula
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Mansfeld World Database of Agricultural and Horticultural Crops: Berkheya radula
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Wikipedia: Berkheya radula