Forster, P.I. (1 December 2011), Five new species of Plectranthus L.Her. (Lamiaceae) from New South Wales and Queensland. Austrobaileya 8(3): 394-398, Fig. 5, Map 2 [tax. nov.]

• Type: Queensland. Port Curtis District: State Forest 316, Kroombit Tops, 16 February 1995, P.I.Forster PIF16246 (holo: BRI [2 sheets + spirit]; iso: MEL, NE).

• APC Dist.: Qld

• Etymology: "The specific epithet is derived from the Latin fragrans (fragrant) and -issima (most) and alludes to the sweetly smelling foliage of this plant."

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: 47 [basionym]

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

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