Hooker, J.D. (17 October 1856), The botany of the Antarctic voyage of H.M. Discovery ships Erebus and Terror. III. Flora Tasmaniae 1(3): 227 [tax. nov.]

• Type: "Gunn, 845."

Black, J.M. (1929), Bignoniaceae - Compositae. Flora of South Australia 4: 661 [basionym]

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

Black, J.M. & Robertson, E.L. (1957), Flora of South Australia Edn. 2, 4: 943 [nomenclatural synonym]

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

Curtis, W.M. (1963), Angiospermae: Lythraceae to Epacridaceae. The Student's Flora of Tasmania 2: 390 [nomenclatural synonym]

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

Boulos, L. in Eichler, Hj. (1965), Sonchus and Embergia. Supplement to J.M.Black's Flora of South Australia (Second Edition, 1943-1957): 333 [basionym]

basionym of: Embergeria megalocarpa (Hook.f.) Boulos legitimate

Lander, N.S. (1976), Actites, A new genus of Compositae from Australia. Telopea 1(2): 130 [secondary reference]

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

basionym of: Actites megalocarpus (Hook.f.) Lander legitimate

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

nomenclatural synonym of: Actites megalocarpus (Hook.f.) Lander legitimate

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

Green, P.S. in Wilson, A.J.G. (ed.) (1994), Norfolk Island & Lord Howe Island. Flora of Australia 49: 373 [nomenclatural synonym]

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

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Asteraceae. Flora of Victoria 4: 700 [nomenclatural synonym]

nomenclatural synonym of: Actites megalocarpus (Hook.f.) Lander legitimate

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

nomenclatural synonym of: Actites megalocarpus (Hook.f.) Lander legitimate

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

orthographic variant: Sonchus asper var. megalocarpa Hook.f. orth. var.

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

nomenclatural synonym of: Actites megalocarpus (Hook.f.) Lander legitimate

Thompson, I.R. in Wilson, A.J.G. (ed.) (2015), Actites. Flora of Australia 37: 122 [nomenclatural synonym]

nomenclatural synonym of: Actites megalocarpus (Hook.f.) Lander legitimate

---