Critical Supplement to the Atlas of the British Flora

By complete coincidence in addition to the Atlas of the British Flora (please see post below) I have also been given a copy of the Critical Supplement to the Atlas of the British Flora edited by FH Perring, published by the Botanical Society of the British Isles in 1978. How that's interesting is the maps contained in this one give a more detailed view of the distribution of micro species, subspecies, varieties and hybrids. Here three dandelion species: Taraxacum palustre, Taraxacum spectabile and Taraxacum laevigatum.