Try the link below. Not a lot of info, but some.

That really is a pretty aster.

Here is a link that might be useful: Aster Victoria Gaby

I just found these at my local nursery, too...they are "Victoria" series, and here's some information on the "Elizabeth" one...and I'm only assuming because I can't find much else on them...and from the pic on their home page that ollie gave you (the pic of the porch)...that they are ALL short varieties (shoot...was looking for something a little taller...)

Anyway, here's what I found...some stats are further down the page

Here is a link that might be useful: Aster Elizabeth Patent info