Description: Perennial  plantof an upright stem that is woody at the base. In the upper part it is branched, it grows up to 60 cm in height. The leaves are opposite, ovate-elliptic, entire-edged, blue-green in color. The flowers are collected in corymbose inflorenscences. The flower consists of an inflated bare calyx. The petals are white. Once wilted, the cup still remains inflated. The fruit is a roundish capsule.

Flowering time: May-September

Habitat: grasslands, meadows on rocky surfaces, can usually be found up to 1500 m above sea level.

Interesting fact: young leaves are edible in salads or can be cooked in stews. The leaves contain saponins and thus o care should be taken regarding the amount consumed. Soap can be made from the roots.