Cunningham, A. in Hooker, W.J. (1 July 1837), Florae insularum Novae Zelandiae precursor; or a specimen of the botany of the islands of New Zealand. Companion to the Botanical Magazine 2(24): 368 [tax. nov.]

Hooker, W.J. & Baker, J.G. (1874), Synopsis Filicum Edn. 2: 86 [basionym]

basionym of: Trichomanes rigidum var. elongatum (A.Cunn.) Hook. & Baker legitimate

Copeland, E.B. (26 October 1938), Genera Hymenophyllacearum. Philippine Journal of Science 67(1): 82 [basionym]

basionym of: Selenodesmium elongatum (A.Cunn.) Copel. legitimate

Tindale, M.D. (1963), Hymenophyllaceae. Contributions from the New South Wales National Herbarium, Flora Series 201: 49 [nomenclatural synonym]

nomenclatural synonym of: Selenodesmium elongatum (A.Cunn.) Copel. legitimate

Wilson, Peter G. in Harden, G.J. (ed.) (1990), Hymenophyllaceae. Flora of New South Wales 1: 35 [nomenclatural synonym]

nomenclatural synonym of: Selenodesmium elongatum (A.Cunn.) Copel. legitimate

Wilson, Peter G. in Harden, G.J. (ed.) (2000), Hymenophyllaceae. Flora of New South Wales Revised Edition 1: 35 [nomenclatural synonym]

nomenclatural synonym of: Selenodesmium elongatum (A.Cunn.) Copel. legitimate

Council of Heads of Australasian Herbaria (2006), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Cephalomanes obscurum (Blume) K.Iwats. legitimate

Ebihara, A., Dubuisson, J.-Y., Iwatsuki, K., Hennequin, S. & Ito, M. (2006), A taxonomic revision of Hymenophyllaceae. Blumea 51: 244 [basionym]

basionym of: Abrodictyum elongatum (A.Cunn.) Ebihara & K.Iwats. legitimate

Council of Heads of Australasian Herbaria (2016), Australian Plant Census: - [taxonomic synonym]

taxonomic synonym of: Abrodictyum obscurum (Blume) Ebihara & K.Iwats. legitimate

Council of Heads of Australasian Herbaria (7 July 2021), Australian Plant Census: - APC [secondary reference]

nomenclatural synonym: Trichomanes rigidum var. elongatum (A.Cunn.) Hook. & Baker legitimate nomenclatural synonym: Selenodesmium elongatum (A.Cunn.) Copel. legitimate nomenclatural synonym: Abrodictyum elongatum (A.Cunn.) Ebihara & K.Iwats. legitimate taxonomic synonym: Trichomanes polyodon Colenso legitimate

• APC Comment: A New Zealand taxon, recorded in synonymy of Abrodictyum obscurum (Blume) Ebihara & K.Iwats., but not known to occur in Australia.

---