Linnaeus, C. (1 May 1753), Species Plantarum 2: 794 [tax. nov.]

• Type: "Habitat in Europae cultis."

• Comment: Given as Sonchus oleraceus γ asper.

Hill, J. (1769), Herbarium Brittanicum 1: 47 [basionym]

basionym of: Sonchus asper (L.) Hill legitimate

Villars, D. (1788), Histoire des Plantes de Dauphine 3(1): 159 [basionym]

basionym of: Sonchus asper (L.) Vill. isonym

Tepper, J.G.O. (1880), On the characteristics and distribution of the native and naturalised plants about Ardrossan, Yorke's Peninsula. Transactions, proceedings and report, Royal Society of South Australia 3: 45 [secondary reference]

Domin, K. (1930), Beitrage zur Flora und Pflanzengeographie Australiens. Bibliotheca Botanica 22(89): 1243 [nomenclatural synonym]

nomenclatural 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 [nomenclatural synonym]

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

Jeanes, J.A. in Walsh, N.G. & Entwisle, T.J. (ed.) (1999), Asteraceae. Flora of Victoria 4: 697 [nomenclatural synonym]

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

Thompson, I.R. (22 May 2007), A taxonomic treatment of tribe Lactuceae (Asteraceae) in Australia. Muelleria 25: 75 [nomenclatural synonym]

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

CHAH (2011), Australian Plant Census: - [nomenclatural synonym]

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

CHAH (2014), Australian Plant Census: - [nomenclatural synonym]

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

Thompson, I.R. in Wilson, A.J.G. (ed.) (2015), Sonchus. Flora of Australia 37: 119 [nomenclatural synonym]

nomenclatural synonym of: Sonchus asper (L.) Hill subsp. asper legitimate

CHAH (31 July 2018), Australian Plant Census: - [nomenclatural synonym]

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

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