NOMENCLATURAL NOTES ON DRYOPTERIS: 4

Summary The following nomenclatural judgements upon disputed or doubtful names are made in compliance with the Code, and changes made as follows: 1. Dryopteris austriaca (Jacquin) Woynar, based on Nephrodium austriacum Jacquin, can only have applied to Pteridium aquilinum (L.) Kuhn from its description, though the type is missing. A lectotype proposed by Jermy of a Dryopteris species cannot be taken as type material and is rejected as such, as are two other candidates for type material. A neotype is therefore designated. The name D. dilatata (Hoffm.) A. Gray is to be used instead for the Dryopteris species. 2. The name D. carthusiana (Vill.) H. P. Fuchs is retained as definitely applying to the taxon it is at present widely used for, despite the apparent absence of a type. A neotype is designated. 3. Dryopteris paleaceae (Sw.) Hand.‐Mazz. is the corrected citation for D. paleacea (Don) Hand.‐Mazz. and replaces D. wallichiana (Spreng.) Hyl., as it appears that Don was taking the name Aspidium paleaceum from Swartz without directly acknowledging it, though he does cite Swartz indirectly; therefore, Aspidium paleaceum Swartz, which is the earliest name, can be legitimately transferred to Dryopteris. The species concerned is found throughout tropical regions of the world, there being no major differences between the typical South American and Himalayan populations.