Oh they are lovely Greg.
Just go to the database and click on 'Add a new plant to the database. This is what will pop up.
Primary common name: is Hen and Chicks
Genus: Sempervivum
Species: Leave this one blank, as Karo is a hybrid, not a species.
Cultivar: Karo
The other ones you won't fill in.
The general information for sempervivum will automatically be added when the semp is entered into the database.
Can't wait to see your new entry.