Green, P.S. (1988), Notes relating to Australian ferns, especially from Norfolk and Lord Howe Islands. Kew Bulletin 43(4): 655-656 [comb. nov.]

basionym: Marattia fraxinea var. howeana W.R.B.Oliv. legitimate common name: King Fern [n/a] common name: Horse Shoe Fern [n/a]

Green, P.S. in Wilson, A.J.G. (ed.) (1994), Norfolk Island & Lord Howe Island. Flora of Australia 49: 556, Fig. 101C-D [secondary reference]

taxonomic synonym: Marattia fraxinea var. howeana W.R.B.Oliv. legitimate taxonomic synonym: Marattia salicina subsp. nov. legitimate misapplication: Marattia salicina Sm. legitimate by Mueller, F.J.H. von (1877), Fragmenta Phytographiae Australiae 10(87): 118 misapplication: Marattia fraxinea Sm. legitimate by Bentham, G. (March 1878), Flora Australiensis 7: 695 misapplication: Marattia fraxinea Sm. legitimate by Hemsley, W.B. (1896), The Flora of Lord Howe Island. Annals of Botany 10(2): 267 common name: King Fern [n/a] common name: Horse Shoe Fern [n/a]

Camus, J.M. in McCarthy, P.M. (ed.) (1998), Marattiaceae. Flora of Australia 48: 112 [secondary reference]

Murdock, A.G. (2008), A taxonomic revision of the eusporangiate fern family Marattiaceae, with description of a new genus Ptisana. Taxon 57(3): 749 [nomenclatural synonym]

nomenclatural synonym of: Ptisana howeana (W.R.B.Oliv.) Murdock legitimate

Council of Heads of Australasian Herbaria (2010), Australian Plant Census: - [secondary reference]

nomenclatural synonym: Marattia fraxinea var. howeana W.R.B.Oliv. legitimate nomenclatural synonym: Ptisana howeana (W.R.B.Oliv.) Murdock legitimate taxonomic synonym: Marattia salicina subsp. nov. legitimate misapplication: Marattia salicina Sm. legitimate by Mueller, F.J.H. von (1877), Fragmenta Phytographiae Australiae 10(87): 118 misapplication: Marattia fraxinea Sm. legitimate by Bentham, G. (March 1878), Flora Australiensis 7: 695 misapplication: Marattia fraxinea Sm. legitimate by Hemsley, W.B. (1896), The Flora of Lord Howe Island. Annals of Botany 10(2): 267

• APC Dist.: LHI

Council of Heads of Australasian Herbaria (2014), Australian Plant Census: - [nomenclatural synonym]

nomenclatural synonym of: Ptisana howeana (W.R.B.Oliv.) Murdock 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): 17 [nomenclatural synonym]

nomenclatural synonym of: Ptisana howeana (W.R.B.Oliv.) Murdock legitimate

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