Linnaeus, C. (1 May 1753), Species Plantarum 1: 429 [tax. nov.]

• Type: "Habitat ad Cap. b. Spei."

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 107 [secondary reference]

Everett, J. & Norris, E.H. in Harden, G.J. (ed.) (1990), Crassulaceae. Flora of New South Wales 1: 527 [secondary reference]

Toelken, H.R., Jeanes, J.A. & Stajsic, V. in Walsh, N.G. & Entwisle, T.J. (ed.) (1996), Crassulaceae. Flora of Victoria 3: 555, Fig. 114g [secondary reference]

Everett, J. & Norris, E.H. in Harden, G.J. (ed.) (2000), Crassulaceae. Flora of New South Wales Revised Edition 1: 527 [secondary reference]

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

nomenclatural synonym: Cotyledon orbiculata L. var. orbiculata legitimate taxonomic synonym: Cotyledon oblonga Haw. legitimate taxonomic synonym: Cotyledon orbiculata var. oblonga (Haw.) DC. legitimate

• APC Comment: Cotyledon orbiculata var. orbiculata is recognised as a distinct taxon in SA and Vic, and C. orbiculata var. oblonga is recognised as a distinct taxon in SA.
• APC Dist.: WA (naturalised), SA (naturalised), NSW (naturalised), Vic (naturalised), Tas (naturalised)

Barrett, Russell & Tay, Eng Pin (2016), Perth Plants: a Field Guide to the Bushland and Coastal Flora of Kings Park and Bold Park Edn. 2: 298-299, photos 1-3 [secondary reference]

common name: Pig's Ear [n/a]

de Salas, M.F. & Baker, M.L. (2016), Tasmanian vascular plant census. A Census of the Vascular Plants of Tasmania, including Macquarie Island: 34 [secondary reference]

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