Looks like a Phlox. Possibly Phlox subulata. A low growing , spreading perennial. There are many named cultivars in different colours. http://images.google.com/images?q=P...1I7SUNA_en-GB&um=1&ie=UTF-8&sa=N&hl=en&tab=wi
Most garden centers sell it by it's more common name "creeping phlox" and comes in mostly pinks, violet shades, white and I have a version called candy cane which is pink and white.
Also available in U.K.garden centres as Phlox sub Candy Stripes http://images.google.com/images?hl=...x+subulata+candy+&btnG=Search+Images&aq=f&oq=
