Pursh, F.T. (1814), Flora Americae Septentrionalis 2: 559 [tax. nov.]

Dunal, M.F. (1819), Memoires du Museum d'Histoire Naturelle 5: 50 [basionym]

basionym of: Grindelia squarrosa (Pursh) Dunal legitimate

Council of Heads of Australasian Herbaria (2011), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Grindelia squarrosa (Pursh) Dunal legitimate

---