About the Author
Ron Porley works for English Nature as a botanist and is chief adviser on bryophytes. Prior to that, he worked for the Nature Conservancy Council and Shropshire Wildlife Trust. Nick Hodgetts worked as a botanist with governmental and non-governmental conservation organisations until 2001, when he became a free-lance botanist and bryologist. Also involved with the BBS and ECCB, he is co-author of the British and European bryophyte Red Data Books.