Bates, R.J. (2014), Caladenia pygmaea, the pygmy finger orchid validated at species level (after more than a century of being misunderstood). Australian Orchid Review 79(5): 55-57 [comb. et stat. nov.]

basionym: Caladenia carnea var. pygmaea R.S.Rogers legitimate

Bates, R.J. (2016), New combinations in the South Australian Caladeniinae. Australian Orchid Review 81(6): 63 [nomenclatural synonym]

nomenclatural synonym of: Petalochilus pygmaeus (R.S.Rogers) R.J.Bates 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: 11, 93 [secondary reference]

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

nomenclatural synonym: Caladenia carnea var. pygmaea R.S.Rogers legitimate taxonomic synonym: Petalochilus carnea var. minor R.J.Bates nom. inval., nom. nud. misapplication: Caladenia pusilla W.M.Curtis legitimate by Bates, R.J. & Weber, J.Z. (7 December 1990), Orchids of South Australia: 53-54 (map), Fig. 67, Plate 61

• APC Dist.: SA

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 82 [secondary reference]

nomenclatural synonym: Caladenia carnea var. pygmaea R.S.Rogers legitimate nomenclatural synonym: Petalochilus pygmaeus (R.S.Rogers) R.J.Bates legitimate common name: Pygmy Finger Orchid [n/a]

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