Rose, J.N. (1911), Contributions from the United States National Herbarium 13(9): 296, f. 55, pl. 52 [tax. nov.]

Council of Heads of Australasian Herbaria (2007), Australian Plant Census: - APC [secondary reference]

• APC Dist.: Qld (doubtfully naturalised)

Thiede, J. & Eggli, U. in Kubitzki, K. (ed.) (2007), Crassulaceae. The Families and Genera of Vascular Plants 9: 109 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 374 [secondary reference]

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