| Sempervivum | 
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| Flowering Sempervivum tectorum | 
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| Scientific classification | 
| Kingdom: | Plantae | 
 
| Clade: | Tracheophytes | 
 
| Clade: | Angiosperms | 
 
| Clade: | Eudicots | 
 
| Order: | Saxifragales | 
 
| Family: | Crassulaceae | 
 
| Subfamily: | Sempervivoideae | 
 
| Tribe: | Semperviveae | 
 
| Genus: | Sempervivum L.
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| Species | 
| List 
Sempervivum × alatum ScheeleSempervivum altum TurrillSempervivum annae Gurgen.Sempervivum arachnoideum L.Sempervivum armenum Boiss. & A.HuetSempervivum artvinense MuirheadSempervivum atlanticum (Ball ex Hook.f.) BakerSempervivum atropatanum J.Parn.Sempervivum balcanicum Stoj.Sempervivum × barbulatum SchottSempervivum borissovae WaleSempervivum brevipilum MuirheadSempervivum calcareum Jord.Sempervivum carpathicum Wettst. ex ProdanSempervivum caucasicum Rupr. ex Boiss.Sempervivum cernochii NiederleSempervivum charadzeae Gurgen.Sempervivum × christii W.WolfSempervivum ciliosum CraibSempervivum × comollii RotaSempervivum davisii MuirheadSempervivum dolomiticum FacchiniSempervivum dzhavachischvilii Gurgen.Sempervivum ekimii KaraerSempervivum ermanicum Gurgen.Sempervivum erythraeum Velen.Sempervivum × feigeanum NeeffSempervivum × fimbriatum Schnittsp. & C.B.Lehm.Sempervivum × funckii F.Braun ex W.D.J.KochSempervivum gillianiae MuirheadSempervivum × giuseppii WaleSempervivum glabrifolium Boriss.Sempervivum globiferum L.Sempervivum grandiflorum Haw.Sempervivum guillemotii LamotteSempervivum herfriedianum NeeffSempervivum heuffelii SchottSempervivum ingwersenii WaleSempervivum iranicum Bornm. & GaubaSempervivum ispartae MuirheadSempervivum kosaninii PraegerSempervivum leucanthum PančićSempervivum × luisae L.GalloSempervivum macedonicum PraegerSempervivum marmoreum Griseb.Sempervivum minus Turrill ex WaleSempervivum minutum (Kunze ex Willk.) Nyman ex PauSempervivum montanum L.Sempervivum × morelianum Viv.-MorelSempervivum ossetiense WaleSempervivum pisidicum Peşmen & GünerSempervivum pittonii Schott, Nyman & KotschySempervivum × praegeri G.D.RowleySempervivum pumilum M.Bieb.Sempervivum × rupicola A.Kern.Sempervivum ruthenicum Schnittsp. & C.B.Lehm.Sempervivum soculense D.Donati & G.DumontSempervivum sosnowskyi Ter-Chatsch.Sempervivum staintonii MuirheadSempervivum × stenopetalum Schnittsp. & C.B.Lehm.Sempervivum tectorum L.Sempervivum × thompsonianum WaleSempervivum transcaucasicum MuirheadSempervivum × vaccarii Wilczek ex Vacc.Sempervivum vicentei PauSempervivum wulfenii Hoppe ex Mert. & W.D.J.Koch
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| Synonyms | 
| Diopogon Jord. & Fourr.Jovibarba (DC.) Opiz)× Jovivum G.D.Rowley
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Sempervivum () is a genus of about 40 species of flowering plants in the family Crassulaceae, commonly known as houseleeks. Other common names include liveforever (the source of the taxonomical designation Sempervivum, literally "always/forever alive") 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. In favourable conditions they spread rapidly via offsets, and several species are valued in cultivation as groundcover for dry, sunny locations.