Lindley, J. (1 January 1840), A Sketch of the Vegetation of the Swan River Colony: liv. [tax. nov.]

• Type: (not cited).

Endlicher, S.F.L. in Lehmann, J.G.C. (ed.) (1846), Orchideae. Plantae Preissianae 2(1): 12-13 [secondary reference]

Reichenbach, H.G. (1871), Bemerkungen fur eine australische orchideenkunde. Beitrage zur Systematischen Pflanzenkunde: 60 [misapplied]

misapplied to: Prasophyllum fimbria Rchb.f. legitimate by Endlicher, S.F.L. in Lehmann, J.G.C. (ed.) (1846), Orchideae. Plantae Preissianae 2(1): 12-13

Bentham, G. (23 September 1873), Flora Australiensis 6: 342 [misapplied]

misapplied to: Prasophyllum fimbria Rchb.f. legitimate by Endlicher, S.F.L. in Lehmann, J.G.C. (ed.) (1846), Orchideae. Plantae Preissianae 2(1): 12-13

George, A.S. (5 May 1971), A check list of the Orchidaceae of Western Australia. Nuytsia 1(2): 187 [secondary reference]

• Type: Swan River, Drummond - holo.: K-L, iso.: K.

Clements, M.A. (December 1983), Notes on the content of John Lindley's Orchid Herbarium. The Orchadian 7(10): 244 [secondary reference]

• Lectotype: " "Swan River, 1839" Drummond (2 specimens both badly chewed by herbarium beetle plus a drawing of the lip)."

Hoffman, N. & Brown, A. (1984), Orchids of South-West Australia: 250-251 [secondary reference]

common name: Bronze Leek Orchid [n/a]

Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 56 [secondary reference]

Rye, B.L. in Marchant, N.G., Wheeler, J.R., Rye, B.L., Bennett, E.M., Lander, N.S. & Macfarlane, T.D. (1987), Orchidaceae. Flora of the Perth Region 2: 834 [secondary reference]

common name: Bronze Leek Orchid [n/a]

Jones, D.L. (1988), Native Orchids of Australia: 255, 257 [secondary reference]

taxonomic synonym: Prasophyllum grimwadeanum Nicholls legitimate common name: Bronze Leek Orchid [n/a]

Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 113 [secondary reference]

taxonomic synonym: Prasophyllum grimwadeanum Nicholls legitimate

Hoffman, N. & Brown, A. (1992), Orchids of South-West Australia Edn. 2: 311 [secondary reference]

common name: Bronze Leek Orchid [n/a]

Hoffman, N. & Brown, A. (1998), Orchids of South-West Australia Edn. 2 (revised): 311 [secondary reference]

common name: Bronze Leek Orchid [n/a]

Paczkowska, G. & Chapman, A.R. (2000), The Western Australian Flora, a descriptive catalogue: 88 [secondary reference]

common name: Bronze Leek Orchid [n/a]

Wheeler, J.R., Marchant, N.G. & Lewington, M. (2002), Flora of the South West 1: 382 [secondary reference]

common name: Bronze Leek Orchid [n/a]

Brown, A., Dundas, P., Dixon, K. & Hopper, S. (2008), Orchids of Western Australia: 258 [secondary reference]

common name: Bronze leek orchid [n/a]

• Etymology: "giant, alluding to the tall flowers spikes"

Hoffman, N. & Brown, A. (2011), Orchids of South-West Australia Edn. 3: 372 [secondary reference]

common name: Bronze Leek Orchid [n/a]

Barrett, Russell & Tay, Eng Pin (2016), Perth Plants: a Field Guide to the Bushland and Coastal Flora of Kings Park and Bold Park Edn. 2: 236-237, photos 1-4 [secondary reference]

common name: Bronze Leek Orchid [n/a]

Backhouse, G.N., Bates, R.J., Brown, A.P. & Copeland, L.M. (1 March 2016), Checklist of the orchids of Australia including its island territories: 32, 130 [secondary reference]

Council of Heads of Australasian Herbaria (28 February 2018), Australian Plant Census: - APC [secondary reference]

taxonomic synonym: Prasophyllum grimwadeanum Nicholls legitimate

• APC Dist.: WA

Clements, M.A. & Jones, D.L. (2019), Notes on Australasian orchids 5: Paraprasophyllum, a new genus in Prasophyllinae (Diurideae). Australian Orchid Review 84(5): 31 [secondary reference]

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 308-309 [secondary reference]

taxonomic synonym: Prasophyllum grimwadeanum Nicholls legitimate common name: Bronze Leek Orchid [n/a]

Brown, A. (19 July 2022), The Complete Orchids of Western Australia 2: 92 [secondary reference]

common name: Bronze Leek Orchid [n/a]

• Etymology: "From the Latin giganteus (large, gigantic, belonging to the giants), in reference to the tall plant height."

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