Bentham, G. (30 May 1863), Flora Australiensis 1: 433 [comb. nov.]

basionym: Trymalium oligocephalum Turcz. legitimate

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 111 [secondary reference]

Rye, B.L. (11 January 1995), New and priority taxa in the genera Spyridium and Trymalium (Rhamnaceae) of Western Australia. Nuytsia 10(1): 127, Fig. 2I-N APC [secondary reference]

• Type: New Holland, [Western Australia], 1849, J. Drummond 5th coll. 236 (PERTH 01179802, KW photo seen).

nomenclatural synonym: Trymalium oligocephalum Turcz. legitimate taxonomic synonym: Spyridium kalganense Diels legitimate

• APC Dist.: WA

Rye, B.L. (31 July 1996), A synopsis of the genera Pomaderris, Siegfriedia, Spyridium and Trymalium (Rhamnaceae) in Western Australia. Nuytsia 11(1): 123, Fig. 6C (map) [secondary reference]

nomenclatural synonym: Trymalium oligocephalum Turcz. legitimate taxonomic synonym: Spyridium kalganense Diels legitimate

Kellermann, J., Mosyakin, S.L., Clowes, C. & Udovicic, F. (1 December 2022), Australian species of Rhamnaceae published by Turczaninow, their types, current names and synonyms. Swainsona 36: 141 [secondary reference]

nomenclatural synonym: Trymalium oligocephalum Turcz. legitimate taxonomic synonym: Spyridium kalganense Diels legitimate

• Etymology: "From the Greek ολιγος (oligos; few) and κεφαλη (cephale; head), because of the apparently low numbers of flower-heads in the taxon."

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