Stojanov, N.A. & Stefanoff, B. (1948), Flore de la Bulgarie croissant spontanément en Bulgarie 3: 1183 [autonym]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 74 [secondary reference]

Murray, L. in Harden, G.J. (ed.) (1992), Carduus. Flora of New South Wales 3: 321 [secondary reference]

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Asteraceae. Flora of Victoria 4: 669, Fig. 128f [secondary reference]

common name: Nodding Thistle [n/a] common name: Musk Thistle [n/a]

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

nomenclatural synonym of: Carduus nutans L. legitimate

Council of Heads of Australasian Herbaria (31 July 2018), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Carduus nutans L. legitimate

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