Nicholls, W.H. (1929), A new species of Thelymitra. The Victorian Naturalist 46: 139-141 [tax. nov.]

• Type: "Airey's Inlet, October, 1927, 1928, Mrs. M. Sutherland ... (A type specimen is preserved in the National Herbarium, Melbourne.)"

• Etymology: "I have named this small-flowered, beautiful sun orchid after Mrs. Merran Sutherland, of Mogg's Creek, Airey's Inlet, Victoria."

Nicholls, W.H. (1935), The sun orchids of Australia. Orchidologia Zeylanica 2(4): 160 [secondary reference]

Nicholls, W.H. (1951), Orchids of Australia: pl. 7 [basionym]

basionym of: Thelymitra ixioides f. merraniae (Nicholls) Nicholls legitimate

Nicholls, W.H. in Jones, D.L. & Muir, T.B. (ed.) (1969), Orchids of Australia: 2 [nomenclatural synonym]

nomenclatural synonym of: Thelymitra ixioides f. merraniae (Nicholls) Nicholls legitimate

Curtis, W.M. (1980), Angiospermae: Orchidaceae. The Student's Flora of Tasmania 4A: 45 [nomenclatural synonym]

nomenclatural synonym of: Thelymitra ixioides f. merraniae (Nicholls) Nicholls legitimate

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 34 [taxonomic synonym]

taxonomic synonym of: Thelymitra ixioides Sw. var. ixioides legitimate

Jones, D.L. (1988), Native Orchids of Australia: 300 [secondary reference]

Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 141 [secondary reference]

taxonomic synonym: Thelymitra ixioides f. merraniae (Nicholls) Nicholls legitimate

Bates, R.J. & Weber, J.Z. (7 December 1990), Orchids of South Australia: 159-160, Fig. 217, Plate 216 [secondary reference]

• Text: "Some authors consider it to be a putative hybrid between T. ixioides and T. x truncata while it has been suggested that some South Australian plants are putative hybrids between T. ixioides x T. holmesii."

Bernhardt, P. in Harden, G.J. (ed.) (1993), Thelymitra. Flora of New South Wales 4: 150 [secondary reference]

Weber, J.Z. & Entwisle, T.J. in Walsh, N.G. & Entwisle, T.J. (ed.) (1994), Thelymitra. Flora of Victoria Edn. 1, 2: 843, 844 [secondary reference]

• Comment: Listed as one component of the "Thelymitra ×truncata complex".

Bishop, A. (1996), Field guide to the orchids of New South Wales and Victoria Edn. 1: 28, Plate 61 [secondary reference]

Jones, D.L. & Clements, M.A. in Banks, D.P. (ed.) (1998), A taxonomic review of Thelymitra in Tasmania. Australian Orchid Research 3: 200 [secondary reference]

nomenclatural synonym: Thelymitra ixioides f. merraniae (Nicholls) Nicholls legitimate

Bishop, A. (2000), Field guide to the orchids of New South Wales and Victoria Edn. 2: 28, Plate 61 [secondary reference]

Jeanes, J.A. in Ross, J.H. & Walsh, N.G. (June 2003), Orchidaceae. A Census of the Vascular Plants of Victoria Edn. 7: 29 [secondary reference]

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: 202 [secondary reference]

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

orthographic variant: Thelymitra merranae Nicholls orth. var. nomenclatural synonym: Thelymitra ixioides f. merranae Nicholls orth. var. nomenclatural synonym: Thelymitra ixioides f. merraniae (Nicholls) Nicholls legitimate

• APC Comment: A hybrid taxon involving Thelymitra ixioides and T. peniculata (fide J.Jeanes & G.Backhouse, Wild Orchids Victoria Australia 221 (2006)).
• APC Dist.: SA, Qld, NSW, Vic, Tas

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 463 [secondary reference]

nomenclatural synonym: Thelymitra ixioides f. merraniae (Nicholls) Nicholls legitimate common name: Merran's Sun Orchid [n/a]

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