%0 Book %A Mitchell, M. E. (Michael E.) %E Knowles, Matilda C. (Matilda Cullen), b. 1865. Lichens of Ireland. %E Porter, Lilian. Lichens of Ireland. %I National Botanic Gardens, Glasnevin %D 1998 %C Dublin %G English %B Occasional papers (National Botanic Gardens, Glasnevin)) ; %T Index of collectors in Knowles' The lichens of Ireland (1929) and Porter's supplement (1948) : with a conspectus of lichen recording in the Irish vice-counties to 1950