Brown, R. (27 March 1810), Prodromus florae Novae Hollandiae et insulae Van-Diemen, exhibens characteres plantarum quas annis 1802-1805: 327 [tax. nov.]

• Type: "(J.) v.v."

Mueller, F.J.H. von (1875), Census of the plants of Tasmania, instituted in 1875. Monthly Notices of Papers and Proceedings of the Royal Society of Tasmania 1874: 89 [secondary reference]

Mueller, F.J.H. von (1882), Systematic Census of Australian Plants: 113 [secondary reference]

Rodway, L. (1903), The Tasmanian Flora: 197 [secondary reference]

Dixon, W.A. (1906), The Plants of New South Wales: 256 [secondary reference]

Bailey, F.M. (1913), Comprehensive Catalogue of Queensland Plants: 538 [secondary reference]

Sulman, F. (1914), A Popular Guide to the Wild Flowers of New South Wales II: 198, 200, Plate LXII [secondary reference]

Domin, K. (1915), Beitrage zur Flora und Pflanzengeographie Australiens. Bibliotheca Botanica 20(85): 547, Fig. 116 [secondary reference]

Rogers, R.S. in Black, J.M. (1922), Orchidaceae. Flora of South Australia 1: 150 [secondary reference]

• Etymology: Nodding.

Black, J.M. (1943), Flora of South Australia Edn. 2, 1: 243, 245 [secondary reference]

Rupp, H.M.R. (January 1944), The Orchids of New South Wales: 83-84 [secondary reference]

common name: Parrot's Beak Orchid [n/a]

Beadle, N.C.W., Evans, O.D. & Carolin, R.C. (1962), Handbook of the Vascular Plants of the Sydney District and Blue Mountains: 466 [secondary reference]

common name: Parrot's Beak Orchid [n/a]

Burbidge, N.T. & Gray, M. (1970), Flora of the Australian Capital Territory: 132, Fig, 118A. [secondary reference]

common name: Parrot's Beak Orchid [n/a]

Curtis, W.M. (1980), Angiospermae: Orchidaceae. The Student's Flora of Tasmania 4A: 13 [secondary reference]

common name: Nodding Greenhood [n/a]

Williams, K.A.W. (1980), Native Plants of Queensland Edn. 2, 1: 244 [secondary reference]

common name: Nodding Greenhood [n/a]

Jacobs, S.W.L. & Pickard, J. (1981), Plants of New South Wales: 32 [secondary reference]

taxonomic synonym: Pterostylis nutans var. hispidula (Fitzg.) Fitzg. legitimate

Jones, D.L. (1988), Native Orchids of Australia: 200 [secondary reference]

common name: Parrot's-Beak Orchid [n/a] common name: Nodding Greenhood [n/a]

Jones, D.L. in Stanley, T.D. & Ross, E.M. (1989), Pterostylis. Flora of South-eastern Queensland 3: 401 [secondary reference]

common name: Nodding Greenhood [n/a]

Clements, M.A. in Jones, D.L. (ed.) (August 1989), Catalogue of Australian Orchidaceae. Australian Orchid Research 1: 124 [secondary reference]

• Lectotype: "`Port Jackson; North Rocks', Jul. 1804, R. Brown s.n. (lectotype specimen (a) BM! here designated, isolectotype BM! P! W!)."

taxonomic synonym: Pterostylis matthewsii Cheeseman legitimate

Bates, R.J. & Weber, J.Z. (7 December 1990), Orchids of South Australia: 136 (map), Fig. 176, Plates 159 & 175 [secondary reference]

common name: Nodding green-hood [n/a]

• Text: "A putative hybrid has been reported with P. cucullata (Adeliade Hills)."

Dockrill, A.W. (1993), Australian Indigenous Orchids Edn. 2, 1: 122-123 [secondary reference]

Jones, D.L. in Harden, G.J. (ed.) (1993), Pterostylis. Flora of New South Wales 4: 177-178 [secondary reference]

common name: Nodding Greenhood [n/a]

Jones, D.L. in Walsh, N.G. & Entwisle, T.J. (ed.) (1994), Pterostylis. Flora of Victoria Edn. 1, 2: 806, Fig. 163a-c [secondary reference]

taxonomic synonym: Pterostylis matthewsii Cheeseman legitimate common name: Nodding Greenhood [n/a]

Bishop, A. (1996), Field guide to the orchids of New South Wales and Victoria Edn. 1: 66, Plate 162 [secondary reference]

common name: Nodding Greenhood [n/a]

Jones, D.L. in Banks, D.P. (ed.) (1 August 1998), A taxonomic review of Pterostylis R.Br. in Tasmania. Australian Orchid Research 3: 147 [secondary reference]

taxonomic synonym: Pterostylis matthewsii Cheeseman legitimate

Jones, D.L., Wapstra, H., Tonelli, P. & Harris, S. (1999), The Orchids of Tasmania: 232 [secondary reference]

common name: Nodding Greenhood [n/a]

Bishop, A. (2000), Field guide to the orchids of New South Wales and Victoria Edn. 2: 66, Plate 162 [secondary reference]

common name: Nodding Greenhood [n/a]

Jones, D.L., Clements, M.A. & Molloy, B.P.J. in Banks, D.P. (ed.) (28 November 2002), A synopsis of the subtribe Pterostylidinae. Australian Orchid Research 4: 136 [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: 26 [secondary reference]

Jessup, L.W. (2005), Flora of South-eastern Queensland Volume 3 Changes to names or status of taxa: - [secondary reference]

nomenclatural synonym: Pterostylis nutans R.Br. var. nutans 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: 200 [secondary reference]

Jones, D.L. (2008), Field Guide to the orchids of the Australian Capital Territory: 210-211 [secondary reference]

common name: Parrot's Beak Orchid [n/a] common name: Nodding Greenhood [n/a]

• Etymology: "nodding"

de Salas, M.F. & Baker, M.L. (2016), Tasmanian vascular plant census. A Census of the Vascular Plants of Tasmania, including Macquarie Island: 102 [secondary reference]

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: 39, 65, 76, 89, 98, 107, 117 [secondary reference]

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

nomenclatural synonym: Pterostylis nutans R.Br. var. nutans legitimate taxonomic synonym: Pterostylis matthewsii Cheeseman legitimate taxonomic synonym: Pterostylis mathewsii M.A.Clem. orth. var.

• APC Dist.: SA, Qld, NSW, ACT, Vic, Tas

Jones, D.L. (January 2021), Native Orchids of Australia Edn. 3: 508 [secondary reference]

taxonomic synonym: Pterostylis matthewsii Cheeseman legitimate common name: Nodding Greenhood [n/a] common name: Parrot's Beak Orchid [n/a]

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