I agree with Jo Ann, it definitely should look like a marmoreum, not a tectorum.
Looks like we need to clear all the photos out of this entry.
Okay, I just made some changes to the entry. Also added a comment at the bottom of the page, under the photos.
Now to notify people that their photos are incorrect.
Hen and Chicks (Sempervivum marmoreum subsp. matricum (tokajense))