Jordan, C.T.A. (1847), Observations sur Plusiers Plantes Nouvelles Rare ou Critiques de la France 5: 75 [tax. nov.]

Ball, J. (1877), Journal of the Linnean Society, Botany 16: 548 [basionym]

basionym of: Sonchus asper subsp. glaucescens (Jord.) Ball legitimate

Boulos, L. in Eichler, Hj. (1965), Sonchus and Embergia. Supplement to J.M.Black's Flora of South Australia (Second Edition, 1943-1957): 331 [taxonomic synonym]

taxonomic synonym of: Sonchus asper subsp. nymanii (Tineo & Guss.) Hegi 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 asper subsp. glaucescens (Jord.) Ball legitimate

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Asteraceae. Flora of Victoria 4: 698 [nomenclatural synonym]

nomenclatural synonym of: Sonchus asper subsp. glaucescens (Jord.) Ball legitimate

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