Mesophile hay meadows of low altitudes, fertilized and well-drained, with Arrhenatherum elatius, Trisetum flavescens, Anthriscus sylvestris, Heracleum sphondylium, Daucus carota, Crepis biennis, Knautia arvensis, Leucanthemum vulgare, Pimpinella major, Trifolium dubium, Geranium pratense; they are most characteristic of the Euro-Siberian zone, but extend to Atlantic Iberia, the Cordillera Central and Montseny, to the Apennines and to the supra-Mediterranean zone of Greece.
Medio-European formations of mid-elevations, characteristic in particular of higher elevations of the lesser Hercynian ranges, intermediate between this unit and 38.3.