Research and Publications
Scarce Plants In Britain. Joint Nature Conservation Committee, Peterborough.
(1994) New Atlas Of The British & Irish Flora. Oxford University Press, Oxford.
(2002) (2004)
Audit Of Non-Native Species In England. English Nature, Peterborough.
(2005) The Vascular Plant Red Data List For Great Britain. Species Status No. 7. Joint Nature Conservation Committee, Peterborough.
(2005) The Flora Of Rum: An Atlantic Island Reserve. Pearman, Truro.
(2008) GB Non-native Species Information Portal: documenting the arrival of non-native species in Britain. Biological Invasions, 16, 2495-2505.
(2014) A Vascular Plant Red List For England. Botanical Society of Britain and Ireland, Bristol.
(2014) Hybrid Flora Of The British Isles. Botanical Society of Britain and Ireland, Bristol.
(2015) (2017)