This section is from the book "British Wild Flowers - In Their Natural Haunts Vol5-6", by A. R. Horwood. Also available from Amazon: A British Wild Flowers In Their Natural Haunts.
Bennett, A.: Supplement to Topographical Botany. Druce, G. C: Comital Census Numbers. Hooker, Sir W. J.: Flora Scotica. Lindley, J.: Synopsis of the British Flora. Marshall, E. S.: The Status of some Britannic Plants. Marshall, E. S.: On the Probable Status of some Irish Plants. Marshall, E. S.: Remarks on Cybele Hibernica, 2nd Ed. Marshall, E. S.: Irish Topographical Botany. More, A. G.: Cybele Hibernica, 2nd Ed. Praeger, R. Ll.: Irish Topographical Botany. Praeger, R. Ll.: Geographical Distribution of Plant Groups in Ireland. Purton, T.: Midland Flora. Rogers, W. M.: On the Distribution of Rubi in Great Britain.
Turner, D., and Dillwyn, L. W.: Botanist's Guide.
Watson, H. C: Cybele Britannica.
Watson, H. C.: New Botanist's Guide.
Watson, H. C.: Geographical Distribution of British Plants.
Watson, H. C.: Topographical Botany.
Williams, F. N.: The High Alpine Flora of Britain.
 
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