The tetrad map above shows the position (for vice-counties 69 and 70 only) after most data collected during 2017 have been added. Many records from earlier years have also now been incorporated. (Note that only tetrads with 50 species or more recorded are mapped.) There is currently a great deal of recording taking place across the county, so if you are intending recording an apparently unrecorded or under-recorded area, you should contact Phill Brown to ascertain the very latest position. (There are contact forms on this site, e.g. at the bottom of this page.)
The map below show the position at this stage a year earlier (March 2017):
The diversity of vascular plant species in the county increases somewhat from north to south, but is also obviously very dependent on altitude, soil-type, land-use, presence of river-courses, etc. A typical lowland tetrad in this part of the planet with a reasonable range of habitats will often reveal 250–300 species after a thorough survey, and a few visits through the season. In southern Cumbria, this may rise to ca. 400. Although the highest ground has a very limited range, at the scale of the tetrad most squares will have some lower ground with much greater diversity. This is more true of the Lake District mountains with their deeply dissected topography; some plateau areas of the high northern Pennines lie at middle to high altitudes throughout.
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