I'm confused about how this plant grows/matures. Some of the photos look like they mature like a semp. rosette, while others like this one are ???
Here's a link to a pic showing both. http://gardenworldimages.co.uk...

Evan that is an Orostachys spinosa, one of which is fasciated (not normal growth). They do grow somewhat like sempervivum and there are many forms that don't look like semps at all.
Orostachys also goes through a much more dramatic dormancy, some plants almost seem to disappear during winter and then regrow in the spring.
The species of spinosa doesn't do that way though, it stays around during the winter, more like semps do. It does send out offsets similar to the way semps do.
Here is one of mine that is fasciated this year.

Here is O. irwarenge in Feb., just coming out of dormancy.

Here it is in Oct 2012


As you can see the different species of this plant can have a different growth pattern.

Thanks for the explanation Lynn and the great photos. It's fantastic the variety of images in the DB. I love these teaching photos.

Our database is most wonderful.