Forster, P.I. (20 February 1997), Plectranthus amoenus and P. thalassoscopicus (Lamiaceae), new species from north-eastern Queensland, Australia. Austrobaileya 4(4): 653-656, Fig. 1 APC [tax. nov.]

• Type: Queensland: Cook District: North Bell Peak summit area, Malbon Thompson Range, 17 deg 05 min S, 145 deg 52 min E, 12 Nov 1995, P.I.Forster 18048, R.L.Jago & R.Jensen (holo: BRI [2 sheets]; iso: K, MEL, QRS).

• APC Dist.: Qld

• Etymology: "Named from the Greek thalassa 'the sea' and skopos 'a watcher' (cf. Johnnson 1989), referring to the habitat of this species facing the sea."

Forster, P.I. in Henderson, R.J.F. (ed.) (2002), Lamiaceae. Names and Distribution of Queensland Plants, Algae and Lichens: 96 [secondary reference]

Cooper, W.E. & Cooper, W.T. (2004), Fruits of the Australian Tropical Rainforest: 239 [secondary reference]

taxonomic synonym: Plectranthus sp. (Mt Bell) [n/a]

Paton, A.J., Mwanyambo, M., Govaerts, R.H.A., Smitha, K., Suddee, S., Phillipson, P.B., Wilson, T.C., Forster, P.I. & Culham, A. (23 August 2019), Nomenclatural changes in Coleus and Plectranthus (Lamiaceae): a tale of more than two genera. Phytokeys 129: 105 [basionym]

basionym of: Coleus thalassoscopicus (P.I.Forst.) P.I.Forst. legitimate

Brown, G.K. & Bostock, P.D. (December 2019), Appendix A: New names and name and status changes 2018 to 2019. Introduction to the Census of the Queensland Flora 2019: 10 [nomenclatural synonym]

nomenclatural synonym of: Coleus thalassoscopicus (P.I.Forst.) P.I.Forst. legitimate

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