Vaillant, S. (1754), Neue Kennzeichen dreyer Classen von Pflanzen mit zusammengesetzeten Blumen, namlich: der Cynarocephalarum, derer mit Artischockenhauptern. Königlichen Akademie der Wissenschaften in Paris Physische Abhandlungen 5: 547 [tax. nov.]

• Type: (not designated).

• Comment: nom. cons. (ref. ICN App. III: 207 (2015)).

Moench, C. (1794), Methodus Plantas Horti Botanici et Agri Marburgensis: 585 [secondary reference]

Tovey, J.R. in Ewart, A.J., White, J. & Rees, B. (1909), Appendix I, in Contributions to the Flora of Australia No. 11. Proceedings of the Royal Society of Victoria 22(1): 24 [secondary reference]

Black, J.M. (1929), Bignoniaceae - Compositae. Flora of South Australia 4: 614 [secondary reference]

• Etymology: "From Greek dis, double; morphe, form; theke, case, achene: the outer and inner fruits are of different shape."

Norlindh, N.T. (1943), Studies in the Calenduleae: 38-76 [secondary reference]

Black, J.M. & Robertson, E.L. (1957), Flora of South Australia Edn. 2, 4: 889 [secondary reference]

• Etymology: "From Greek dis, double; morphe, form; theke, case, achene: the outer and inner fruits are of different shape."

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 76 [secondary reference]

Voss, E.G. (1983), International Code of Botanical Nomenclature, Sydney, 1981. Regnum Vegetabile 111: 422 [secondary reference]

• Lectotype: Dimorphotheca plavialis (L.) Moench (typ. cons.)

Scott, J.A. in Harden, G.J. (ed.) (1992), Dimorphotheca. Flora of New South Wales 3: 314 [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: 245, Fig. 60 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 274 [secondary reference]

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

• APC Dist.: WA (naturalised), SA (naturalised), Qld (naturalised), NSW (naturalised), NI (doubtfully naturalised), Vic (naturalised), Tas (naturalised)

Ghafoor, A. in Wilson, A.J.G. (ed.) (2015), Asteraceae Subfam. Asteroideae Trib. 2. Calenduleae. Flora of Australia 37: 321-322 [secondary reference]

• Etymology: "from the Greek, di (two), morphe (form or shape) and thece (case, container), referring to the different shapes of the ray and disc achenes."

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