British ferns (Filicopsida)

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L. Watson and M. J. Dallwitz


Vice-county distributions were supplied by Quentin Groom, from data maintained by the Botanical Society of the British Isles. We thank Kenneth J. Sytsma for permission to use his photographs of Onoclea sensibilis and Pteridium latiusculum; and Don Lubin for those of Matteuccia struthiopteris and Cyrtomium falcatum (see