| Family | CRASSULACEAE |
| Genus species | Sempervivum tomentosum C.B.Lehm. & Schnittsp. |
| Bibliography | Flora 39: 57 (1856) |
| Native Range | Alps to Pyrenees and Apennines |
| Primary Biome | Temperate |
| Habitat | rocks |
| Description | rosettes minute, nearly flat, linear, on apex snowily arachnose, stem leaves dense, broadly ovate, flowers subsessile, petals 10, broadly lanceolate |
| Size | 5-12cm |
| Color | deep rose |
| Bloom | summer |
| Ca | |
| Type | succulent perennial |
| Cultivation | sunny rock crevices, protection against winter wet alpine house, poor, drained soil, sun |
| Propagation | seed in spring, uncovered, germ. 1-3 months, 18-21°C division in spring and in late summer; detachment of rosette |
| Synonyms | Sempervivum arachnoideum var. tomentosum (C.B.Lehm. & Schnittsp.) St.-Lag. Sempervivum arachnoideum ssp. tomentosum (C.B.Lehm. & Schnittsp.) Schinz & Thell. Sempervivum laggeri Schott ex Hallier Sempervivum webbianum C.B.Lehm. & Schnittsp. |
| Territory | 1 Europe 11 Middle Europe (SWI Switzerland) 12 Southwestern Europe (COR Corse, FRA France, SPA Spain) 13 Southeastern Europe (ITA Italy) |