Olde, P.M. & Marriott, N.R. (1994), New names and combinations in Grevillea (Proteaceae: Grevilleoideae). The Grevillea Book 1: 186 [tax. nov.]

• Type: "33.5 km E of Ravensthorpe on Highway 1, WA, 11 Nov. 1986, P.M.Olde 86/1148."

• Comment: The name “Grevillea rigida Olde & Marriott subsp. rigida" is listed by P.M.Olde & N.R.Marriott, Grevillea Book 1: 186 (1994), R.O.Makinson in A.J.G.Wilson (ed.), Fl. Australia 17A: 73 (2000) and C.M.Parker & J.M.Percy-Bower, Nuytsia 27: 12 (2016), but since the species name is illegitimate this autonym is not established, in accordance with ICN Art. 27.2 (Melbourne Code, 2012).
• Comment: nom. illeg., non Saporta, Ann. Sci. Nat., Bot. ser. 5, 3: 100, t. 5 fig. 2 (1862) [fossil taxon].

Olde, P.M. & Marriott, N.R. (1995), The Grevillea Book 3: 137 [secondary reference]

• Etymology: "The specific epithet is derived from the Latin rigidus (stiff), in reference to the leaf texture."

Makinson, R.O. in Wilson, A.J.G. (ed.) (2000), Grevillea. Flora of Australia 17A: 73 [secondary reference]

• APC Dist.: WA

Turner, I.M. (2014), Names of extant angiosperm species that are illegitimate homonyms of fossils. Annales Botanici Fennici 51: 307 [replaced synonym]

replaced synonym of: Grevillea neorigida I.M.Turner legitimate

Parker, C.M. & Percy-Bower, J.M. (31 March 2016), Updates to Western Australia’s vascular plant census for 2015. Nuytsia 27: 11 [nomenclatural synonym]

nomenclatural synonym of: Grevillea neorigida I.M.Turner legitimate

Olde, P.M. (20 October 2017), A preliminary checklist of fossil names in extant genera of the Proteaceae. Telopea 20: 302 [nomenclatural synonym]

nomenclatural synonym of: Grevillea neorigida I.M.Turner legitimate

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