Sempervivum youngianum (Webb & Berthel.) Catlow
, Pop. Greenh. Bot. 79 (1857).
External links to taxonomic opinions:
- IPNI Life Sciences Identifier (LSID)
- urn:lsid:ipni.org:names:60470434-2
- Publication
- Popular Greenhouse Botany: containing a familiar and technical description of a selection of the exotic plants introduced into the greenhouses ... London (Lovell Reeve, ...)
- Collation
- 79
- Family as entered in IPNI
- Crassulaceae