Boulos, L. in Eichler, Hj. (1965), Sonchus and Embergia. Supplement to J.M.Black's Flora of South Australia (Second Edition, 1943-1957): 331-332 [tax. nov.]

• Type: "South Australia. Fleurieu Peninsula. In watercourse three miles (ca. 5 km) north of Victor Harbour. J.B. Cleland, s.n., 8.I.1945 (AD 96148074)."

Koster, J.T. (1976), The Compositae of New Guinea V. Blumea 23(1): 165 [basionym]

basionym of: Sonchus asper f. hydrophilus (Boulos) J.Kost. legitimate

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 169 [taxonomic synonym]

taxonomic synonym of: Sonchus asper (L.) Hill legitimate

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

taxonomic synonym of: Sonchus asper (L.) Hill legitimate

Murray, L. in Harden, G.J. (ed.) (1992), Sonchus. Flora of New South Wales 3: 338 [secondary reference]

common name: Native Sowthistle [n/a]

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Asteraceae. Flora of Victoria 4: 698, Fig. 134e [secondary reference]

nomenclatural synonym: Sonchus asper f. hydrophilus (Boulos) J.Kost. legitimate common name: Native Sow-thistle [n/a]

Thompson, I.R. (22 May 2007), A taxonomic treatment of tribe Lactuceae (Asteraceae) in Australia. Muelleria 25: 76-77 [secondary reference]

nomenclatural synonym: Sonchus asper f. hydrophilus (Boulos) J.Kost. legitimate common name: Native Sow-thistle [n/a]

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

nomenclatural synonym: Sonchus asper f. hydrophilus (Boulos) J.Kost. legitimate misapplication: Sonchus asper var. gracilis Albert legitimate by Cleland, J.B. (1946), South Australian Naturalist 23(4): 13

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

Thompson, I.R. in Wilson, A.J.G. (ed.) (2015), Sonchus. Flora of Australia 37: 121, Plate 9, Fig. 10G-I, map [secondary reference]

nomenclatural synonym: Sonchus asper f. hydrophilus (Boulos) J.Kost. legitimate common name: Native Sow-thistle [n/a]

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: 58-59, photos 1-4 [secondary reference]

common name: Native Sowthistle [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: 23 [secondary reference]

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