Dry acid grassland remains reasonably widespread in the uplands of Wales (CCW 2003), and it is the scarcer lowland form which is considered to be of greatest conservation significance in the UK BAP and its Welsh equivalent. This habitat may support a range of scarce vascular plants species such as bitter-vetch (Lathyrus linifolius), moonwort (Botrychium lunaria), upright chickweed (Moenchia erecta) and shepherd’s-cress (Teesdalia nudicaulis).