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.

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Journal Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht
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Citation
Willems, J.H. (1973). 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). Mededelingen van het Botanisch Museum en Herbarium van de Rijksuniversiteit te Utrecht, 387(1), 231–244.