Black, J.M. (1929), Additions and Corrections. Flora of South Australia 4: 678 [tax. nov.]

• Type: "Breakneck River, K.I."

Black, J.M. (1943), Flora of South Australia Edn. 2, 1: 166 [taxonomic synonym]

taxonomic synonym of: Cladium laxum (Nees) Benth. legitimate

Koyama, T. (1956), Taxonomic Study of Cyperaceae V. Botanical Magazine (Tokyo) 69: 64 [basionym]

basionym of: Machaerina gracilis (J.M.Black) T.Koyama legitimate

Eichler, Hj. (1965), Supplement to J.M.Black's Flora of South Australia (Second Edition, 1943-1957): 76 [taxonomic synonym]

taxonomic synonym of: Machaerina laxa (Nees) T.Koyama legitimate

State Herbarium of South Australia (2008), Fact sheets. The Electronic Flora of South Australia: - [taxonomic synonym]

taxonomic synonym of: Baumea laxa (Nees) Boeckeler legitimate

Council of Heads of Australasian Herbaria (2012), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Baumea laxa (Nees) Boeckeler legitimate

Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Machaerina laxa (Nees) T.Koyama legitimate

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