Lander, N.S. (1976), Actites, A new genus of Compositae from Australia. Telopea 1(2): 130 [comb. et stat. nov.]

basionym: Sonchus asper var. megalocarpus Hook.f. legitimate nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate nomenclatural synonym: Embergeria megalocarpa (Hook.f.) Boulos legitimate taxonomic synonym: Sonchus asper var. littoralis J.M.Black nom. illeg.

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 71 [secondary reference]

nomenclatural synonym: Sonchus asper var. megalocarpus Hook.f. legitimate nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate nomenclatural synonym: Embergeria megalocarpa (Hook.f.) Boulos legitimate taxonomic synonym: Sonchus asper var. littoralis J.M.Black nom. illeg.

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 163 [secondary reference]

Stanley, T.D. in Stanley, T.D. & Ross, E.M. (1986), Asteraceae. Flora of South-eastern Queensland 2: 596 [nomenclatural synonym]

nomenclatural synonym of: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate

Lander, N.S. in Marchant, N.G., Wheeler, J.R., Rye, B.L., Bennett, E.M., Lander, N.S. & Macfarlane, T.D. (1987), Asteraceae. Flora of the Perth Region 2: 654 [secondary reference]

nomenclatural synonym: Embergeria megalocarpa (Hook.f.) Boulos legitimate

Green, J.W. (18 October 1987), Census of the Vascular Plants of Western Australia Edn. 2, Suppl. 5: 15 [secondary reference]

nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate

Murray, L. in Harden, G.J. (ed.) (1992), Actities. Flora of New South Wales 3: 339 [secondary reference]

nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate common name: Dune Thistle [n/a]

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Asteraceae. Flora of Victoria 4: 700, Fig. 134f [secondary reference]

nomenclatural synonym: Sonchus asper var. megalocarpus Hook.f. legitimate nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate nomenclatural synonym: Embergeria megalocarpa (Hook.f.) Boulos legitimate common name: Dune Thistle [n/a]

Wheeler, J.R., Marchant, N.G. & Lewington, M. (2002), Dicotyledons. Flora of the South West 2: 493 [secondary reference]

common name: Dune Thistle [n/a]

Jessup, L.W. (22 April 2002), Flora of South-eastern Queensland Volume 2 Changes to names or status of taxa: - [secondary reference]

nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate

Thompson, I.R. (22 May 2007), A taxonomic treatment of tribe Lactuceae (Asteraceae) in Australia. Muelleria 25: 78 [secondary reference]

nomenclatural synonym: Sonchus asper var. megalocarpus Hook.f. legitimate nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate nomenclatural synonym: Embergeria megalocarpa (Hook.f.) Boulos legitimate taxonomic synonym: Sonchus asper var. littoralis J.M.Black nom. illeg. common name: Dune Thistle [n/a]

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

orthographic variant: Actites megalocarpa Lander orth. var. nomenclatural synonym: Sonchus asper var. megalocarpus Hook.f. legitimate nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate nomenclatural synonym: Embergeria megalocarpa (Hook.f.) Boulos legitimate taxonomic synonym: Sonchus asper var. megalocarpa Hook.f. orth. var. taxonomic synonym: Sonchus asper var. littoralis J.M.Black nom. illeg. taxonomic synonym: Embergeria sp. legitimate

• APC Dist.: WA, SA, Qld, NSW, LHI, Vic, Tas

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: 97 [secondary reference]

Thompson, I.R. in Wilson, A.J.G. (ed.) (2015), Actites. Flora of Australia 37: 122-123, Plate 12, Fig. 10N-O, map [secondary reference]

nomenclatural synonym: Sonchus asper var. megalocarpus Hook.f. legitimate nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate nomenclatural synonym: Embergeria megalocarpa (Hook.f.) Boulos legitimate taxonomic synonym: Sonchus asper var. littoralis J.M.Black nom. illeg. common name: Dune Thistle [n/a]

de Salas, M.F. & Baker, M.L. (2016), Tasmanian vascular plant census. A Census of the Vascular Plants of Tasmania, including Macquarie Island: 9, 23 [secondary reference]

nomenclatural synonym: Sonchus megalocarpus (Hook.f.) J.M.Black legitimate

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