Cadair Idris IPA

Location: Snowdonia National Park. Near the junction of the B4405 and A487, is a large NP car park, about 300m from which is the NNR entrance.

Grid Reference: SH 715 135


Cadair Idris 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 Killarney fern
  • One of the UK’s most important populations of Eyebright
  • The species richness of bryophytes in broadleaved deciduous woodland
  • The species richness of freshwater algae in surface standing waters
  • The species richness of vascular plants in ‘fern diversity’
  • One of the best UK examples of threatened habitats of:
    Calcareous rocks with crack & fissure vegetation;
    Nutrient poor lakes with sparse vegetation;
    Acid rocks with crack & fissure vegetation;
    Acidic montane scree

    This towering mountain area contains some of the most dramatic mountain scenery in Wales and is home to a range of upland plant communities.
  • Cliffs and rocky outcrops support lichens, bryophytes and vascular plants, and there are mountain lakes, areas of grass with an endemic eyebright species, heathland, mire and moss and liverwort and lichen-rich Sessile Oak woodland.

    Image: Cadair Idris IPA © Alan Hamilton/Plantlife