Conn, B.J. (12 March 1992), New species of Plectranthus and Westringia (Labiatae) from New South Wales. Telopea 4(4): 646 [primary reference]

Conn, B.J. (12 March 1992), New species of Plectranthus and Westringia (Labiatae) from New South Wales. Telopea 4(4): 646 [taxonomic synonym]

taxonomic synonym of: Plectranthus cremnus B.J.Conn legitimate

Council of Heads of Australasian Herbaria (2010), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Plectranthus cremnus B.J.Conn legitimate

Council of Heads of Australasian Herbaria (29 September 2022), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Coleus cremnus (B.J.Conn) A.J.Paton legitimate

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