Observations on N.W. European Limestone grassland-vegetations I. Limestone grassland—vegetations in the central part of the French Jura, South of Champagnôle (Dept. Jura)

In June, 1969, the author studied a number of limestone grassland-vegetations in the French Jura Mountains, South of Champagnôle, on the methods of the French-Swiss School of phytosociology. These vegetations can be assigned to the alliance Mesobromion Br.-Bl. & Moor 1938, and belong to the: A. Pinguicula Vulgaris – Bromus ERECTUS-VEGETATION. B. Eu-Mesobromion Oberd. 1957. Mesobrometum collinum (Scherr. 1925) Oberd. 1957. 1. subass. typicum 2. hypericetosum subass. nov. a. Achillea millefolium-variant b. Teucrium chamaedrys-variant Special attention was paid to the cryptogams ocouring in these associations. More than 40 taxa of bryophytes and lichens were met with. There proved to be a distinct correlation between the phanerogamic communities and the distribution of the cryptogams.