I can't merge two threads together, but I did split this thread.
It is easy to see how this can happen on a name. The names are identical in spelling, but one is a two part name. Two different breeders and separated by 24 years.
Julia, I think you are correct. The one being sold by Mountain Crest Gardens should show the spelling as S. 'Donar Rose'.
Tufted and long cilia lining the leaves.
Hen and Chick (Sempervivum 'Donar Rose')
Smooth tectorum type.
Hen and Chicks (Sempervivum tectorum 'Donarrose')
Thank you for bringing this up Julia. I will let Mountain Crest know about the correct name of their wonderful tufted sempervivum.
I also added a comment to both sempervivum entries in the database.