Bentham, G. (30 May 1863), Flora Australiensis 1: 141 [tax. nov.]

• Type: "Endeavour river, R. Brown; Upper Victoria river, F. Mueller."

Domin, K. (1927), Beitrage zur Flora und Pflanzengeographie Australiens. Bibliotheca Botanica 22(89): 857 [basionym]

basionym of: Polygala chinensis var. squarrosa (Benth.) Domin legitimate

Adema, F.A.C.B. (1967), A review of the herbaceous species of Polygala in Malesia (Polygalaceae). Blumea 14(2): 268 [replaced synonym]

replaced synonym of: Polygala exsquarrosa Adema legitimate

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

nomenclatural synonym of: Polygala exsquarrosa Adema legitimate

Kerrigan, R.A. (30 April 2012), A treatment for Polygala of northern Australia. Australian Systematic Botany 25(2): 106 [secondary reference]

• Lectotype: "(here designated): Endeavour R., R. Brown; lecto: BM 566301!; isolectotype: BRI 391425!, CANB 900371219! [sic; CANB 371219]; remaining syntype: Upper Victoria R., F. Muell.; syn- K 356710!; excluded syntype: Upper Victoria R., F. Muell.; syn- K 356709!."

• Text: "Specimen K 356709 is a different species, P. bifoliata, and is thus excluded."

Kerrigan, R.A. (30 April 2012), A treatment for Polygala of northern Australia. Australian Systematic Botany 25(2): 106 [nomenclatural synonym]

nomenclatural synonym of: Polygala exsquarrosa Adema legitimate

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