Description: The vice county sub-divisions were derived from the descriptions given in a paper published in the Proceedings of the Royal Irish Academy, Vol. 80B, 179-196 (1980) by D.A. Webb, M.R.I.A., School of Botany , Trinity College, Dublin, and taken from www.botanicgardens.ie/herb/census/webbvcs.htm. A coloured, A3 sized map, Ireland in Forty Botanical Divisions, published by John Bartholomew & Sons, Ltd. Edinburgh (no date), was also used as guidance.