The Caucasian stonecrop (Sedum spurium) belongs to Crassulaceae (the Orpine family). It is a semi-evergreen herb that is native to the Caucasus. This herb grows on rocks in moist regions, and it can reach 15-20 cm in height. The leaves are succulent, green, obovate, and arranged in opposite. The pink, five-petaled, star-like flowers bloom in spring through fall. The photos are probably a cultiver 'Purpurteppich' which has small, scalloped, deep plum-purple leaves and small dark purple-red flowers.