The Mountain houseleek (Sempervivum montanum) belongs to Crassulaceae (the Orpine family). It is an evergreen perennial herb that is native to the mountains of Europe; the Perenees, the Alps and the Apennines. This herb grows in acid rocks and screes, 1500-3200 m elevation, and can reach 5-25 cm in height. All parts of plant are hairy and resin-scented. The leaves are ovate, dull green and form rosettes. The flowers are reddish-purple with 11-15 petals, and bloom July and August.