Linnaeus, C. (1 May 1753), Species Plantarum 2: 921 [tax. nov.]

• Type: (not designated).

Linnaeus, C. (1754), Genera Plantarum Edn. 5: 393 [secondary reference]

Steudel, E.G. von (August 1840), Nomenclator Botanicus Edn. 2, 1(1-2): 256 [secondary reference]

• Type: Calendula officinalis L.

Bentham, G. (5 January 1867), Orders XLVIII. Myrtaceae- LXII. Compositae. Flora Australiensis 3: 675 [secondary reference]

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

• Etymology: "Modern Latin for the marigold, a diminutive of calendae, the calends of each month: perhaps because it flowers nearly all the year."

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

• Etymology: "Modern Latin for the marigold, a diminutive of calendae, the calends of each month: perhaps because it flowers nearly all the year."

Curtis, W.M. (1963), Angiospermae: Lythraceae to Epacridaceae. The Student's Flora of Tasmania 2: 372 [secondary reference]

Cronquist, A.J. (1981), An Integrated System of Classification of Flowering Plants: 1025 [secondary reference]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 73 [secondary reference]

Jessop, J.P. in Jessop, J.P. (ed.) (1981), Compositae (Asteraceae) - most genera. Flora of Central Australia: 385 [secondary reference]

Stanley, T.D. in Stanley, T.D. & Ross, E.M. (1986), Asteraceae. Flora of South-eastern Queensland 2: 577 [secondary reference]

Scott, J.A. in Harden, G.J. (ed.) (1992), Calendula. Flora of New South Wales 3: 313-314 [secondary reference]

Short, P.S. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Calendula. Flora of Victoria 4: 832-833 [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: 243 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 137 [secondary reference]

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

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

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

basionym of: Osteospermum sect. Calendula (L.) J.C.Manning & Goldblatt legitimate

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: 317 [secondary reference]

• Etymology: "from Latin calende (the first day of each month), probably because C. officinalis may flower throughout the year."

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