Species attributes

Hill, M.O., Mountford, J.O., Roy, D.B. & Bunce, R.G.H. (1999) Ellenberg's indicator values for British plants. ECOFACT Volume 2 technical annex. Institute of Terrestrial Ecology, Huntingdon.

Hill, M.O., Preston, C.D. & Roy, D.B. (2004) PLANTATT - attributes of British and Irish Plants: status, size, life history, geography and habitats. Centre for Ecology and Hydrology, Huntingdon.

Preston, C.D., Pearman, D.A. & Hall, A.R. (2004) Archaeophytes in Britain. Botanical Journal of the Linnean Society, 145, 257-294.