BIBLIOGRAPHICAL INDEX of the BRITISH FLORA including Floras, Herbals, Periodicals, Societies and References relating to the identification, distribution and occurrence of Phanerogams, Vascular Cryptogams and Charophytes in the British Isles compiled by N. DOUGLAS SIMPSON, M.A., F.L.S. is at archive.bsbi.org.uk/SimpsonsIndex.pdf
Liverpool Area Hall, T.B (1839). A Flora of Liverpool. Walmsley, Liverpool. Whitaker and Co. London. with an engraved map ; and an appendix, containing meteorological tables & observations for the year 1838, by Wilson Armistead. xvii, 186 pp. : illustrated , fold. Map.
Fisher, H.S. (ed.) (1872). The Flora of Liverpool. Liverpool Naturalists Field Club. Appendix (Supplements) in 1873, 1875 and 1887. Covers an area 15 miles around Liverpool and two miles around Southport. Brown, R. (1873). Appendix to the Flora of Liverpool. Liverpool Naturalists Field Club. Brown, R. (1875). Second Appendix to the Flora of Liverpool. Liverpool Naturalists Field Club. Brown, R. (1887). Third Appendix to the Flora of Liverpool. Liverpool Naturalists Field Club.
Green, Conrad Theodore (1902). The Flora of The Liverpool District . D. Marples & Co. Liverpool. Illustrated by Emily Margaret Wood. Link here https://www.biodiversitylibrary.org/item/224522#page/9/mode/1up Green, C.T. (1933). Flora of the Liverpool District. Second edition. T. Buncle, Arbroath.
Cheshire De Tabley, Lord (1899). The Flora of Cheshire. Longman, Green and Co., London. Newton, A. (1971). Flora of Cheshire. Cheshire Community Council, Chester. Newton, A. (1990). Supplement Flora of Cheshire. A. Newton, Leamington Spa. privately published. 52 pp.
South Lancashire Savidge, J.P., Heywood,V.H. and Gordon, V. (1963). Travis’s Flora of South Lancashire. Liverpool Botanical Society, Liverpool.
Preston Scientific Society. (1903). Flora of Preston and Neighbourhood. Preston Scientific Society. 62pp. Wheldon, J.A and Wilson, A. (1907). The Flora of West Lancashire. Liverpool. Livermore, L.A. and Livermore, P.D. (1987). The Flowering Plants and Ferns of North Lancashire. Greenwood, E.F. (2012). Flora of North Lancashire. Palatine Books (Carnegie Publishing). ISBN: 9781874181897. [647 pages, 76 plates and 1250 maps].
Mersey Basin Greenwood, E. F. (ed.) (1998). Ecology and Landscape Development. A history of the Mersey Basin. Liverpool University Press, Liverpool.
Manchester area Wood, J.B. (1840). Flora Mancuniensis:or A Catalogue of the Flowering Plants, the Ferns and Their Allies, Found (indigenous) Within Fifteen Miles of Manchester, Arranged According to the Linnaean System ...Manchester Mechanics' Institution Natural History Society. 81 pages. Grindon, L.H. (1859). The Manchester Flora: a descriptive list of the plants growing wild within eighteen miles of Manchester. William White, London. at https://www.biodiversitylibrary.org/item/264298#page/9/mode/1up also contains an Appendix of Southport Plants. from page 535 athttps://www.biodiversitylibrary.org/item/264298#page/553/mode/1up Greenless, T. & Holden, T.K. (1919/20). Flora of Bolton. Lancashire and Cheshire Naturalist. 1920/21.