Perennial to biennial of the Campanulaceae family, endemic to Greece, mainly located in the Peloponnese and some massifs in the center of the country. It occupies limestone cliffs, rock crevices and rocky walls, between 500 and 1,800 meters in altitude.
It forms a dense and rounded cushion, 15 to 20 cm in height, with a remarkably compact habit. Outside of flowering, the basal rosettes have oval to slightly lobed leaves, strongly crenellated, entirely covered with a dense and whitish indument, almost woolly, giving them a characteristic gray-green to silvery-gray hue. This abundant pubescence, present on both sides as well as on the petioles and stems, constitutes an adaptation to the hot and dry rocky environments of its native area, and gives the plant, even without flowers, a notable textural presence in the rock garden.
The flowers are widely open in a flared star shape, with well-separated and slightly recurved lobes, of a soft and bright lilac-purple. They are produced in mass over the entire cushion, completely covering the foliage at the time of full bloom.
In its natural habitat, its flowering extends from June to August. In cultivation, it blooms in June-July. It requires a limestone soil, very well-drained, in a sunny to semi-shaded exposure, with protection against stagnant winter moisture. It is suitable for rock gardens, walls and raised containers.