Wallroth, C.(K.)F.W. (1822), Schedulae Criticae de plantis Florae Halensis selectis: 432 [tax. nov.]

Bentham, G. (5 January 1867), Orders XLVIII. Myrtaceae- LXII. Compositae. Flora Australiensis 3: 679 [taxonomic synonym]

taxonomic synonym of: Sonchus oleraceus L. legitimate

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

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

---