Brown, R. (27 March 1810), Prodromus florae Novae Hollandiae et insulae Van-Diemen, exhibens characteres plantarum quas annis 1802-1805: 321 [tax. nov.]

• Type: (J.) v.v.

Mueller, F.J.H. von (20 October 1853), First general report of the Government Botanist on the vegetation of the colony. Victoria - Parliamentary Papers- Votes and Proceedings of the Legislative Assembly: 18 [secondary reference]

Mueller, F.J.H. von (1865), Fragmenta Phytographiae Australiae 5(35): 97 [taxonomic synonym]

taxonomic synonym of: Microtis viridis F.Muell. nom. illeg.

Reichenbach, H.G. (1871), Bemerkungen fur eine australische orchideenkunde. Beitrage zur Systematischen Pflanzenkunde: 62 [basionym]

basionym of: Microtis unifolia var. rara (R.Br.) Rchb.f. legitimate

Rodway, L. (1903), The Tasmanian Flora: 195 [taxonomic synonym]

taxonomic synonym of: Microtis porrifolia R.Br. ex Spreng. nom. illeg., nom. superfl.

Rupp, H.M.R. (January 1944), The Orchids of New South Wales: 21 [taxonomic synonym]

taxonomic synonym of: Microtis unifolia (G.Forst.) Rchb.f. legitimate

Dockrill, A.W. (1969), Australian Indigenous Orchids: 92 [taxonomic synonym]

taxonomic synonym of: Microtis unifolia (G.Forst.) Rchb.f. legitimate

Curtis, W.M. (1980), Angiospermae: Orchidaceae. The Student's Flora of Tasmania 4A: 59-60 [secondary reference]

taxonomic synonym: Microtis oblonga R.S.Rogers legitimate common name: Sweet Onion-orchid [n/a]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 30 [taxonomic synonym]

taxonomic synonym of: Microtis unifolia (G.Forst.) Rchb.f. legitimate

Bates, R. (19 June 1984), The genus Microtis R.Br. (Orchidaceae): a taxonomic revision with notes on biology. Journal of the Adelaide Botanic Gardens 7(1): 77 [secondary reference]

• Lectotype: R. Brown s.n., Port Jackson, New South Wales, 1804 (BM lecto., K!, ? AD iso!).

nomenclatural synonym: Microtis unifolia var. rara (R.Br.) Rchb.f. legitimate taxonomic synonym: Microtis brownii Rchb.f. legitimate taxonomic synonym: Microtis truncata R.S.Rogers legitimate taxonomic synonym: Microtis oblonga R.S.Rogers legitimate taxonomic synonym: Microtis magnadenia R.S.Rogers legitimate pro parte taxonomic synonym: Microtis viridis F.Muell. nom. illeg.

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

taxonomic synonym: Microtis brownii Rchb.f. legitimate

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: 829 [secondary reference]

taxonomic synonym: Microtis brownii Rchb.f. legitimate taxonomic synonym: Microtis truncata R.S.Rogers legitimate

Jones, D.L. (1988), Native Orchids of Australia: 326, 327, 329 [secondary reference]

taxonomic synonym: Microtis brownii Rchb.f. legitimate taxonomic synonym: Microtis oblonga R.S.Rogers legitimate taxonomic synonym: Microtis magnadenia R.S.Rogers legitimate common name: Sweet Onion Orchid [n/a] common name: Scented Onion Orchid [n/a]

Ross, E.M. in Stanley, T.D. & Ross, E.M. (1989), Orchidaceae. Flora of South-eastern Queensland 3: 380 [secondary reference]

nomenclatural synonym: Microtis unifolia var. rara (R.Br.) Rchb.f. legitimate taxonomic synonym: Microtis viridis F.Muell. nom. illeg. taxonomic synonym: Microtis brownii Rchb.f. legitimate taxonomic synonym: Microtis truncata R.S.Rogers legitimate taxonomic synonym: Microtis oblonga R.S.Rogers legitimate taxonomic synonym: Microtis magnadenia R.S.Rogers legitimate common name: Scented Onion Orchid [n/a]

Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 96 [secondary reference]

nomenclatural synonym: Microtis unifolia var. rara (R.Br.) Rchb.f. legitimate taxonomic synonym: Microtis magnadenia R.S.Rogers legitimate

Bates, R.J. & Weber, J.Z. (7 December 1990), Orchids of South Australia: 99-100 (map), Fig. 139, Plate 122 [secondary reference]

taxonomic synonym: Microtis oblonga R.S.Rogers legitimate common name: slender mignonette orchid [n/a] common name: Sweet onion-orchid [n/a]

• Etymology: "The name rara (far apart, sparse) refers to the flowers which are more widely spaced than in other microtis."

Rowe, R.R. in Harden, G.J. (ed.) (1993), Microtis. Flora of New South Wales 4: 154, pl. 9 [secondary reference]

taxonomic synonym: Microtis oblonga R.S.Rogers legitimate taxonomic synonym: Microtis magnadenia R.S.Rogers legitimate common name: Scented Onion Orchid [n/a]

Entwisle, T.J. & Bates, R.J. in Walsh, N.G. & Entwisle, T.J. (ed.) (1994), Microtis. Flora of Victoria Edn. 1, 2: 867, Fig. 183g-h [secondary reference]

taxonomic synonym: Microtis oblonga R.S.Rogers legitimate common name: Scented Onion-orchid [n/a] common name: Sweet Onion-orchid [n/a]

Bishop, A. (1996), Field guide to the orchids of New South Wales and Victoria Edn. 1: 34-35, Plate 80 [secondary reference]

common name: Scented Onion Orchid [n/a]

Jones, D.L. in Banks, D.P. (ed.) (1998), Introduction and the genera Acianthus, Arthrochilus, X Calassodia, Calochilus, Corybas, Cyrtostylis, Dipodium, Dockrillia, Gastrodia, Leptoceras, Microtis, Pyrorchis and Townsonia. Australian Orchid Research 3: 11 [secondary reference]

Jones, D.L., Wapstra, H., Tonelli, P. & Harris, S. (1999), The Orchids of Tasmania: 173 [secondary reference]

common name: Scented Onion Orchid [n/a]

• Etymology: "rare"

Bishop, A. (2000), Field guide to the orchids of New South Wales and Victoria Edn. 2: 34-35, Plate 80 [secondary reference]

common name: Scented Onion [n/a]

Jeanes, J.A. in Ross, J.H. & Walsh, N.G. (June 2003), Orchidaceae. A Census of the Vascular Plants of Victoria Edn. 7: 23 [secondary reference]

taxonomic synonym: Microtis oblonga R.S.Rogers legitimate

Barker, W.R., Barker, R.M., Jessop, J. & Vonow, H. (ed.) (18 March 2005), Census of South Australian Vascular Plants 5th Edition. Journal of the Adelaide Botanic Gardens Supplement 1: 198 [secondary reference]

taxonomic synonym: Microtis brownii Rchb.f. legitimate taxonomic synonym: Microtis oblonga R.S.Rogers legitimate

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: 29, 73, 88, 96 [secondary reference]

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

nomenclatural synonym: Microtis unifolia var. rara (R.Br.) Rchb.f. legitimate taxonomic synonym: Microtis magnadenia R.S.Rogers legitimate

• APC Comment: Circumscription of Microtis rara in SA and Qld includes M. oblonga.
• APC Dist.: SA, Qld, NSW, Vic

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

misapplied to: Microtis oblonga R.S.Rogers legitimate by Curtis, W.M. (1980), Angiospermae: Orchidaceae. The Student's Flora of Tasmania 4A: 59-60

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

misapplied to: Microtis brownii Rchb.f. legitimate by Green, J.W. (1985), Census of the Vascular Plants of Western Australia Edn. 2: 56

Clements, M.A. & Jones, D.L. (2019), Notes on Australasian orchids 5: Paraprasophyllum, a new genus in Prasophyllinae (Diurideae). Australian Orchid Review 84(5): 30 [secondary reference]

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 400 [secondary reference]

nomenclatural synonym: Microtis unifolia var. rara (R.Br.) Rchb.f. legitimate common name: Scented Onion Orchid [n/a]

---