Bedford, D.J. (22 January 1985), Xanthorrhoea acanthostachya (Xanthorrhoeaceae), a new species of the Perth Region, Western Australia. Nuytsia 5(2): 317-321, Figs 1-3 [tax. nov.]

• Type: "Chatfield Rd, South Western Highway, Western Australia, 24 Nov. 1982, D.J. Bedford 4 and T.D. Macfarlane (holo: NSW; iso: PERTH)."

• Etymology: "The specific epithet is from the Greek akantha, meaning a thorn or prickle, and stakhys, an ear or grain or spike, in reference to the distinctly thorny or prickly appearance of the spike due to the prominent cluster-bracts."

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 48 [secondary reference]

Bedford, D.J. in George, A.S. (ed.) (1986), Xanthorrhoea. Flora of Australia 46: 169, Figs 37Q, 39G-L, Map 218 APC [secondary reference]

• APC Dist.: WA

Bedford, D.J. in Marchant, N.G., Wheeler, J.R., Rye, B.L., Bennett, E.M., Lander, N.S. & Macfarlane, T.D. (1987), Xanthorrhoeaceae. Flora of the Perth Region 2: 750 [secondary reference]

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