Torrey, J. & Gray, A. (1842), A Flora of North America 2(2): 318 [tax. nov.]

• Type: "Texas, Drummond!"

Hnatiuk, R.J. (ed.) (1990), Census of Australian Vascular Plants: 55 [secondary reference]

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

• APC Dist.: Qld (naturalised)

Orchard, A.E., Cross, E.W. & Bayer, R.J. in Wilson, A.J.G. (ed.) (2015), Helianthus. Flora of Australia 37: 557-558, map [secondary reference]

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