Orig. (Hübl 1959): Euphorbio-Quercetum Knapp 1944 (Euphorbia angulata, E. cyparissias, E. polychroma = E. epithymoides, Quercus cerris, Q. petraea, Q. pubescens)

Syn.: Euphorbio-Quercetum vindobonense Knapp 1944 (§ 1, § 34a), Torilido-Quercetum Blažková (1989) 1997, Corno-Quercetum sensu auct. non Máthé et Kovács 1962 (pseudonym), Lithospermo-Quercetumpetraeae sensu auct. bohem. non Br.-Bl. 1932 (pseudonym)

Formal definition: (Quercus petraea agg. cover > 10 % OR Quercus pubescens agg. cover > 10 % OR Quercus robur cover > 10 %) AND (group Acer campestre OR group Lathyrus vernus) AND group Buglossoides purpurocaerulea NOT group Asarum europaeum NOT group Iris variegata NOT group Lathyrus pannonicus NOT group Stachys recta NOT Carpinus betulus cover > 25 % NOT Fraxinus excelsior cover > 25 % NOT Tilia cordata cover > 25 % NOT Tilia platyphyllos cover > 25 %