Brown, N.E. (1925), Gardeners' Chronicle. London. Series 3 78: 433 [tax. nov.]

• Type: (not designated).

Black, J.M. (January 1948), Casuarinaceae-Euphorbiaceae. Flora of South Australia Edn. 2, 2: 337 [secondary reference]

• Etymology: "Greek psilos, bald, glabrous; kaulos, stem"

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 62 [secondary reference]

Prescott, A. & Venning, J. in George, A.S. (ed.) (1984), Aizoaceae. Flora of Australia 4: 24 [secondary reference]

Jacobs, S.W.L. & Highet, J. in Harden, G.J. (ed.) (1990), Aizoaceae. Flora of New South Wales 1: 197 [secondary reference]

Hartmann, H.E.K. in Kubitzki, K. (ed.) (1993), Aizoaceae. The Families and Genera of Vascular Plants 2: 47-48 [secondary reference]

Walsh, N.G. in Walsh, N.G. & Entwisle, T.J. (ed.) (1996), Aizoaceae. Flora of Victoria 3: 108 [secondary reference]

Jacobs, S.W.L. & Highet, J. in Harden, G.J. (ed.) (2000), Aizoaceae. Flora of New South Wales Revised Edition 1: 197 [secondary reference]

Council of Heads of Australasian Herbaria (2005), Australian Plant Census: - [secondary reference]

• APC Dist.: SA (naturalised), NSW (naturalised), Vic (naturalised)

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 712 [taxonomic synonym]

taxonomic synonym of: Mesembryanthemum L. legitimate

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

taxonomic synonym of: Mesembryanthemum L. legitimate

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