Thunberg, C.P. (1800), Prodromus Plantarum Capensium 2: sub no. LIV, 145 [tax. nov.]

• Type: Pentzia crenata Thunb. (nom. illeg.)

Källersjö, M. (1988), A generic re-classification of Pentzia Thunb. (Compositae-Anthemideae) from southern Africa. Botanical Journal of the Linnean Society 96: 310 [pro parte taxonomic synonym]

pro parte taxonomic synonym of: Oncosiphon Källersjö legitimate

Wheeler, J.R., Marchant, N.G. & Lewington, M. (2002), Dicotyledons. Flora of the South West 2: 518 [secondary reference]

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: 355 [secondary reference]

Thompson, I.R. (22 May 2007), A taxonomic treatment of tribe Anthemideae (Asteraceae) in Australia. Muelleria 25: 45 APC [secondary reference]

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

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 645-646 [secondary reference]

Thompson, I.R. in Wilson, A.J.G. (ed.) (2015), Asteraceae Subfam. Asteroideae Trib. 3. Anthemideae. Flora of Australia 37: 358 [secondary reference]

• Etymology: "named after C.J.Pentz, a Swedish botanist and colleague of C.P.Thunberg."

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