Linnaeus, C. (1 May 1753), Species Plantarum 2: 793 [tax. nov.]

• Type: "Habitat in Europae agris argillosis."

Hooker, J.D. (29 December 1859), Introductory Essay. The botany of the Antarctic voyage of H.M. Discovery ships Erebus and Terror. III. Flora Tasmaniae 2(11): cviii. [secondary reference]

Dixon, W.A. (1906), The Plants of New South Wales: 199 [secondary reference]

common name: Sow Thistle [n/a]

Bailey, F.M. (1913), Comprehensive Catalogue of Queensland Plants: 277 [secondary reference]

common name: Corn Sow-thistle [n/a]

Boulos, L. in Eichler, Hj. (1965), Sonchus and Embergia. Supplement to J.M.Black's Flora of South Australia (Second Edition, 1943-1957): 330-331 [secondary reference]

common name: Corn Sow-thistle [n/a]

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

• APC Comment: Listed J.D.Hooker in the introductory essay of Fl. Tas. 2: cviii (1859), and collected once in SA, but not considered naturalised (see I.R.Thompson, Muelleria, 25: 74 (2007))

Thompson, I.R. in Wilson, A.J.G. (ed.) (2015), Sonchus. Flora of Australia 37: 118 [secondary reference]

• Text: "... a native of Europe, was identified from Clare in the northern Lofty Ra. S.A. in 1960, however, there is no evidence to suggest that it has become naturalised."

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