The Ornithogalo pontici-Stipetum tirsae ass. nov. association on the territory of the Mineralovodskaya sloping plain (North Caucasus)

On the base of J. Braun-Blanquet approach a new association Ornithogalo pontici– Stipetum tirsae ass. nov. with two subordinate subassociations typicum and paeonetosum tenuifoliae were established. They characterize the steppe vegetation of the Northern Caucasus. The syntaxa were assigned to the alliance Festucion valesiacae, order Festucetalia valesiacae of the class Festuco-Brometea.