Lessing, C.F. (1831), Synanthereae. Linnaea: ein Journal für die Botanik in ihrem ganzen Umfange, oder Beiträge zur Pflanzenkunde 6: 97 [tax. nov.]

• Type: "Calendula pluvialis Thunb. ex parte.

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

taxonomic synonym: Tripteris atropurpurea Turcz. legitimate

Black, J.M. (1929), Bignoniaceae - Compositae. Flora of South Australia 4: 614, Fig. 275 [secondary reference]

Norlindh, N.T. (1943), Studies in the Calenduleae: 328 [basionym]

basionym of: Osteospermum clandestinum (Less.) Norl. legitimate

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

nomenclatural synonym of: Osteospermum clandestinum (Less.) Norl. legitimate

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 83 [nomenclatural synonym]

nomenclatural synonym of: Osteospermum clandestinum (Less.) Norl. legitimate

Short, P.S. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Osteospermum. Flora of Victoria 4: 831 [nomenclatural synonym]

nomenclatural synonym of: Osteospermum clandestinum (Less.) Norl. legitimate

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Monoculus monstrosus (Burm.f.) B.Nord. legitimate

Barker, R.M. & Lang, P.J. (10 July 2012), Name changes associated with the South Australian census of vascular plants for the calendar year 2011. Journal of the Adelaide Botanic Gardens 25: 99 [taxonomic synonym]

taxonomic synonym of: Monoculus monstrosus (Burm.f.) B.Nord. legitimate

Ghafoor, A. in Wilson, A.J.G. (ed.) (2015), Asteraceae Subfam. Asteroideae Trib. 2. Calenduleae. Flora of Australia 37: 324 [taxonomic synonym]

taxonomic synonym of: Monoculus monstrosus (Burm.f.) B.Nord. legitimate

Barrett, Russell & Tay, Eng Pin (2016), Perth Plants: a Field Guide to the Bushland and Coastal Flora of Kings Park and Bold Park Edn. 2: 278 [taxonomic synonym]

taxonomic synonym of: Monoculus monstrosus (Burm.f.) B.Nord. legitimate

Council of Heads of Australasian Herbaria (29 September 2022), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Monoculus monstrosus (Burm.f.) B.Nord. legitimate

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