Nevertheless, T. serpyllum is no longer an accepted name. The plant has been reclassified, along with some other species, as T. praecox subsp. arcticus. I don't grow either of these, and we have no photos of them in the database, but I see no appreciable difference in the Google images of the two.
https://www.google.com/search?...
https://www.google.com/search?...
