Actually there is NO Jovibarba anymore. They are ALL Sempervivum. I do sneak a "J." on my nametags as there are several names used by BOTH groups. I have the semp 'Jade' and the heufff 'Jade' for example.
To distinguish them we should be calling them S. heuffelii 'Jade' as all of those are from that species alone.
OK off my soapbox.
Kevin
