Article

In the Limousin region (France), serpentinites forrnations are linked to landscape morphologically, characterised by a clear karstification. Rock decomposition has lead to the constitution of lithic magnesisols, deeply mobisted by iron exudation. In the flora can be recognized three phytogeographic groups:

• serpentinophytes,
• therrnophilic and xerophilic species and species of mediterranean affinity,
• acidiphilic species. The Pteridophitic rocky groupement is close to Asplenium serpentinii Alliance and the pelouse groupement to Koelerio - Phleion Alliance. We detected no species to be a bioaccumulator of heavy metals.