Webb, P.B. & Berthelot, S. (1840), Histoire Naturelle des Iles Canaries 3(2,1): 184-198, pl. 28-35 [tax. nov.]

Toelken, H.R., Jeanes, J.A. & Stajsic, V. in Walsh, N.G. & Entwisle, T.J. (ed.) (1996), Crassulaceae. Flora of Victoria 3: 553 [secondary reference]

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

• APC Dist.: WA (naturalised), SA (naturalised), Vic (naturalised), Tas (naturalised)

Thiede, J. & Eggli, U. in Kubitzki, K. (ed.) (2007), Crassulaceae. The Families and Genera of Vascular Plants 9: 104, Fig. 29 [secondary reference]

Mabberley, D.J. (1 May 2008), Mabberley's Plant-Book Edn. 3: 16 [secondary reference]

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