. . "Saxifragales" . . . . "Magnoliophyta" . . . "Sempervivum tectorum" . . "Crassulaceae" . "Magnoliopsida" . "Sempervivum tectorum L." . . "Common Houseleek" . . . "L." . . "Sempervivum" . . . . . . . "Plantae" .