I adore my Dawn Ansell primrose, with its leafy collar of green around the flower. All my other primroses have plain flowers with no little leaves around them. I asked at a local nursery if there were others with the same collar of green leaves, and she didn't know of any. Does anyone here?

Here's a link to a picture in Plantfiles:

http://davesgarden.com/guides/pf/showimage/38852/