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CCDB → Angiosperms → Crassulaceae → Sempervivum → Sempervivum tomentosum C. B. Lehm. & Schnittsp.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| ! | Sempervivum tomentosum C. B. Lehm. & Schnittsp. | Sempervivum arachnoideum subsp. tomentosum (C. B. Lehm. & Schnittsp.) Schinz & Thell. | 64 | Flora Iberica | Nmeros cromosomticos de plantas occidentales, 38-45. Fernndez Casas, J. & A. Garca-Villaraco.Anales Jard. Bot. Madrid36: 395-397(1980). |