Succulents growing in stony crevices

Sempervivum is a genus of about 40 species of flowering plants in the family Crassulaceae, commonly known as houseleeks. Other common names include liveforever and hen and chicks, a name shared with plants of other genera as well. They are succulent perennials forming mats composed of tufted leaves in rosettes. Wikipedia

Family: Crassulaceae

Subfamily: Sempervivoideae

Genus: Sempervivum; L.

Kingdom: Plantae