St Just Moors (Lower Bostraze & Leswidden) IPA

Location: Between St Just and Penzance, either side of the A3071, at the far west of Cornwall.

Grid Reference: SW 385 314

St. Just Moors (Lower Bostraze and Leswidden) IPA has been recognised as one of 165 Important Plant Areas in the UK.

The key features of this IPA are:

  • One of the UK’s most important populations of western rustwort
  • The species richness of desmids in surface standing waters
  • Like the St Austell Clay pits, the pits at Lower Bostraze and Leswidden are now-disused china clay quarries.

    The exposed clay waste and decaying granite rocks here support important populations of the internationally very rare liverwort western rushwort. This is one of only two sites in the UK where it exists.

    The clay surfaces are also colonised by the flilamentous green freshwater algae known as desmids for which this is a site of international importance.