Forster, P.I. (1 September 1994), Ten new species of Plectranthus L'Her. (Lamiaceae) from Queensland. Austrobaileya 4(2): 172-174, Fig. 5 [tax. nov.]

• Type: Queensland: Cook District: Garraway Hill, 11 Jul. 1993, P.I.Forster 13543 & M.C.Tucker (holo: BRI [3 sheets + spirit]); iso: A, AD, CANB, K, MEL, QRS)

• Etymology: "The specific epithet is derived from the Latin excelsus (lofty or high) and refers to the tall stature of the plants at the type locality."

Hyland, B.P.M., Whiffin, T.P., Christophel, D.C., Gray, B., Elick, R.W. & Ford, A.J. (1999), Australian tropical rain forest trees and shrubs. Australian tropical rain forest trees and shrubs: 68 [secondary reference]

Forster, P.I. in Henderson, R.J.F. (ed.) (2002), Lamiaceae. Names and Distribution of Queensland Plants, Algae and Lichens: 95 [secondary reference]

Queensland Herbarium (2003), New plant names and taxa Queensland July 1994-July 2003: 18 APC [secondary reference]

taxonomic synonym: Plectranthus sp. Garraway Hill (P.I.Forster+ PIF13543) Qld Herbarium [n/a]

• APC Dist.: Qld

Cooper, W.E. & Cooper, W.T. (2004), Fruits of the Australian Tropical Rainforest: 238 [secondary reference]

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: 45 [basionym]

basionym of: Coleus excelsus (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: 9 [nomenclatural synonym]

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

Forster, P.I. (7 December 2022), Austrobaileya publication dates 1977–2022. Austrobaileya 12: 118 [secondary reference]

• Comment: Publication date corrected to 1 September 1994

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