Cunningham, A. (1839), Florae insularum Novae Zelandiae precursor. Annals of Natural History 2(9): 206 [primary reference]

• Text: "Quid Galium umbrosum, Sol. Ms. in Forst. Prodr. n. 500, absque descr.? ex Nova Zelandia."
• Comment: Cunningham's reference to this name is here treated as a note indicating doubt as to the identity of the taxon, rather than as a doubtful synonym of his new species Galium propinquum A.Cunn.

McGillivray, D.J. (13 October 1983), A revision of Galium (Rubiaceae) in Australia and New Zealand. Telopea 2(4): 364 [taxonomic synonym]

taxonomic synonym of: Galium propinquum A.Cunn. legitimate

Council of Heads of Australasian Herbaria (31 July 2018), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Galium propinquum A.Cunn. legitimate

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