| Zaadplanten | Kern angiospermen |
| Claden_1 | eudicots |
| Claden_2 | core eudicots |
| Claden_3 | superrosids |
| Domein | Eukaryota Whittaker & Margulis |
| Supergroep | Archaeplastida (Plantae) Adl et al. |
| Rijk | Viridiplantae Cavalier-Smith |
| Subrijk | Streptobionta Kenrick & Crane |
| Superstam | Embryophyta Engler |
| Stam | Magnoliophyta Cronquist, Takht. & W. Zimm. ex Reveal |
| Orde | Saxifragales Bercht. & J.Presl |
| Familie | Crassulaceae J.St.-Hil. |
| Subfamilie | Sempervivoideae Arnott |
| Tak | Semperviveae Dumort. |
| Geslacht | Sempervivum L. |
| Sectie | Arachnoidea Lehm. & Schnittsp. |
| Soort | arachnoideum L. |
| Subsoort | tomentosum (C.B. Lehm. & Schnittsp.) Schinz & Thell. |
| Synoniem | Sempervivum arachnoideum 'Laggeri' |
Sempervivum arachnoideum L. ssp. tomentosum (C.B. Lehm. & Schnittsp.) Schinz & Thell.
