Lessing, C.F. (1832), Synopsis Generum Compositarum: 90 [tax. nov.]

Anderberg, A.A., Baldwin, B.G., Bayer, R.G., Breitwieser, I., Jeffrey, C., Dillon, M.O., Eldenäs, P., Funk, V., Garcia-Jacas, N., Hind, D.J.N., Karis, P.O., Lack, H.W., Nesom, G., Nordenstam, B., Oberprieler, C., Panero, J.J., Puttock, C., Robinson, H., Stuessy, T.F., Susanna, A., Urtubey, E., Vogt, R., Ward, J. & Watson, L.E. in Kubitzki, K. (ed.) (2007), Compositae. The Families and Genera of Vascular Plants 8: 243 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 599 [secondary reference]

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - APC [secondary reference]

pro parte taxonomic synonym: Osteospermum L. legitimate

• APC Dist.: WA (naturalised), SA (naturalised)

Manning, J.C. & Goldblatt, P. (2012), Plants of the greater Cape floristic region: 1: The Core Cape Flora. Strelitzia 29: 802 [taxonomic synonym]

taxonomic synonym of: Osteospermum L. legitimate

Ghafoor, A. in Wilson, A.J.G. (ed.) (2015), Asteraceae Subfam. Asteroideae Trib. 2. Calenduleae. Flora of Australia 37: 325 [secondary reference]

• Etymology: "from the Greek oligo (few) and karpos (fruit), referring to the relatively few achenes in the capitulum."

---