34.341 - Hercynian calcaro-siliceous stony grasslands

Classification des habitats du Paléarctique (2001)

Description

Rupicolous communities, colonizing, in particular, deep cracks and ledges of calcaro-siliceous rocky slopes or cliffs, with, notably, Festuca heteropachys, Artemisia campestris, Aster linosyris, Lychnis viscaria, Potentilla rupestris. The range of these formations is centered on the Hercynian ranges of middle Germany (notably Rhine, Nahe, Moselle, Mainz valleys and Hartz periphery), extending east to the Bohemian basin, west to Alsace and to extremely rare and isolated outposts in Ardenne valleys of Luxembourg, Belgium and France, where they are represented by Festuca heteropachys or Potentilla rupestris grasslands.

Correspondances phytosociologiques

Festuco-Brometea: Koelerio-Phleetalia phleoidis (Brometalia erecti): Koelerio-Phleion phleoidis: Viscario-Festucetum heteropachyos, Agrostio-Brometum i.a.

Bibliography

Devillers P., Devillers-Terschuren J. & Vander Linden C., 2001. PHYSIS Palaearctic Habitat Classification Database. Updated to 10 December 2001. Institut Royal des Sciences Naturelles, Bruxelles. (Source)

Lebrun & al., 1949: unit 98; Moravec & al., 1983; De Sloover and Lebrun, 1984; Duvigneaud, 1985; Duvigneaud and Saintenoy-Simon, 1988a; Ellenberg, 1988; Saintenoy-Simon and Duvigneaud, 1989; Oberdorfer, 1990, 1993a: 148-155; Mucina and Kolbek, 1993a: 456-457, 458-459.