Erechtites quadridentatus (Labill.) DC. legitimate = Senecio quadridentatus Labill.
Erechtites quadridentatus (Labill.) DC. auct. non (Labill.) DC.: sensu Mueller, F.J.H. von (1875), Fragmenta Phytographiae Australiae 9(75): 77 = Senecio howeanus Belcher
Erechtites quadridentatus (Labill.) DC. auct. non (Labill.) DC.: sensu Hemsley, W.B. (1896), The Flora of Lord Howe Island. Annals of Botany 10(2): 240 = Senecio howeanus Belcher
Erechtites quadridentatus (Labill.) DC. auct. non (Labill.) DC.: sensu Maiden, J.H. (25 September 1914), Further notes on the botany of Lord Howe Island. Proceedings of the Linnean Society of New South Wales 39: 379 = Senecio howeanus Belcher