This is a vegetation type of open swards with Veronica dillenii, V. verna and some other vernal therophytes adapted to dry and acidic soils. It occurs in small patches near rock outcrops, at sites influenced by soil erosion, and in disturbed places within acidophilous dry grasslands. It occurs most frequently in warm, dry colline landscapes of the Bohemian Massif in central Bohemia and western Moravia. It is also rarely found in the moderately cool areas where it is confined to well-insolated rocky slopes of river valleys.