Jermy, A.C., Arnold, H.R., Farrell, L. & Perring, F.H. (1978) Atlas of Ferns of the British Isles. Botanical Society of the British Isles and British Pteridological Society, London.
Perring Franklyn H.
First name
Franklyn
Middle name
H.
Last name
Perring
Perring, F.H. & Walters, S.M. (1962) Atlas of the British Flora. Nelson, London.
Perring, F.H. & Farrell, L. (1983) British Red Data Book, Volume 1: Vascular Plants, 2nd ed. Royal Society for the Conservation of Nature, Lincoln.
Perring, F.H. & Walters, S.M. (1968) Critical Supplement to the Atlas of the British Flora. Nelson, London.