Brown, R. (27 March 1810), Prodromus florae Novae Hollandiae et insulae Van-Diemen, exhibens characteres plantarum quas annis 1802-1805: 159 [tax. nov.]

• Type: "(D.) v.v."

Poiret, J.L.M. in Lamarck, J.-B.P.A. de M. de & Poiret, J.L.M. (1 November 1817), Encyclopédie Méthodique, Botanique Suppl. 5(1): 349 [basionym]

basionym of: Trichomanes rarum (R.Br.) Poir. legitimate

Rodway, L. (1903), The Tasmanian Flora: 290 [secondary reference]

Dixon, W.A. (1906), The Plants of New South Wales: 283 [secondary reference]

Domin, K. (October 1914), Beitrage zur Flora und Pflanzengeographie Australiens. Bibliotheca Botanica 20(85): 23 [secondary reference]

taxonomic synonym: Hymenophyllum imbricatum Colenso legitimate

Copeland, E.B. (1937), Philippine Journal of Science 64: 128-129 [secondary reference]

taxonomic synonym: Hymenophyllum gunnii Hook. & Baker legitimate

Copeland, E.B. (26 October 1938), Genera Hymenophyllacearum. Philippine Journal of Science 67(1): 21 [basionym]

basionym of: Mecodium rarum (R.Br.) Copel. legitimate

Beadle, N.C.W., Evans, O.D. & Carolin, R.C. (1962), Handbook of the Vascular Plants of the Sydney District and Blue Mountains: 50-51 [secondary reference]

Tindale, M.D. (1963), Hymenophyllaceae. Contributions from the New South Wales National Herbarium, Flora Series 201: 27-29, Pl. 2.3-4 [secondary reference]

• Lectotype: "Derwent, R. Brown No. 97, Iter Austr., 1802–05 (BM). ISOTYPES: (K; MEL).

nomenclatural synonym: Mecodium rarum (R.Br.) Copel. legitimate taxonomic synonym: Hymenophyllum semibivalve Hook. & Grev. legitimate taxonomic synonym: Hymenophyllum imbricatum Colenso legitimate taxonomic synonym: Hymenophyllum gunnii Hook. & Baker legitimate

Willis, J.H. (1970), A Handbook to Plants in Victoria Edn. 2, 1: 15 [nomenclatural synonym]

nomenclatural synonym of: Mecodium rarum (R.Br.) Copel. legitimate

Wilson, Peter G. in Harden, G.J. (ed.) (1990), Hymenophyllaceae. Flora of New South Wales 1: 33 [secondary reference]

nomenclatural synonym: Mecodium rarum (R.Br.) Copel. legitimate common name: Narrow Filmy Fern [n/a]

Entwisle, T.J. in Walsh, N.G. & Entwisle, T.J. (ed.) (1994), Ferns and Allied Plants. Flora of Victoria Edn. 1, 2: 37, 39, Fig. 7g-h [secondary reference]

nomenclatural synonym: Mecodium rarum (R.Br.) Copel. legitimate common name: Narrow Filmy-fern [n/a]

Bostock, P.D. & Spokes, T.M. in McCarthy, P.M. (ed.) (1998), Hymenophyllaceae. Flora of Australia 48: 130, Fig. 50E-F, Map 91 [secondary reference]

nomenclatural synonym: Mecodium rarum (R.Br.) Copel. legitimate taxonomic synonym: Hymenophyllum gunnii Hook. & Baker legitimate

Wilson, Peter G. in Harden, G.J. (ed.) (2000), Hymenophyllaceae. Flora of New South Wales Revised Edition 1: 33 [secondary reference]

nomenclatural synonym: Mecodium rarum (R.Br.) Copel. legitimate common name: Narrow Filmy Fern [n/a]

Tindale, M.D. & Roy, S.K. (23 December 2002), A cytotaxonomic survey of the Pteridophyta of Australia. Australian Systematic Botany 15(6): 846 [secondary reference]

Council of Heads of Australasian Herbaria (2006), Australian Plant Census: - APC [secondary reference]

nomenclatural synonym: Mecodium rarum (R.Br.) Copel. legitimate taxonomic synonym: Trichomanes rarum (R.Br.) Poir. legitimate taxonomic synonym: Hymenophyllum gunnii Hook. & Baker legitimate

• APC Dist.: NSW, Vic, Tas

Ebihara, A., Dubuisson, J.-Y., Iwatsuki, K., Hennequin, S. & Ito, M. (2006), A taxonomic revision of Hymenophyllaceae. Blumea 51: 231 [secondary reference]

Ebihara, A., Nitta, J.H. & Iwatsuki, K. (2010), The Hymenophyllaceae of the Pacific Area. 2. Hymenophyllum (Excluding Subgen. Hymenophyllum). Bulletin of the National Museum of Nature and Science, Series B (Botany) 36(2): 49, Fig. 13 [secondary reference]

nomenclatural synonym: Mecodium rarum (R.Br.) Copel. legitimate taxonomic synonym: Hymenophyllum semibivalve Hook. & Grev. legitimate taxonomic synonym: Hymenophyllum imbricatum Colenso legitimate taxonomic synonym: Hymenophyllum gunnii Hook. & Baker legitimate

Brownsey, P.J. & Perrie, L.R. (2016), Taxonomic notes on the New Zealand flora: lectotypes in the fern family Hymenophyllaceae. New Zealand Journal of Botany 54(1): 51 [secondary reference]

taxonomic synonym: Hymenophyllum imbricatum Colenso legitimate

Field, A.R. (2 January 2020), Classification and typification of Australian lycophytes and ferns based on Pteridophyte Phylogeny Group classification PPG I. Australian Systematic Botany 33(1): 25 [secondary reference]

• Type: "Derwent, R.Brown Iter Austral. 97 (lecto: BM 001044791; possible isolecto: BM 001044790*, E 00208902*, E 00208903*, E 00208904*, K 001090338*, K 001090342*, MEL 105710*, MEL 105713*"

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