'Limey Lisa' has small, spoon-cupped chartreuse-lime leaves that form a dense, flattish mound. Grows quickly and blooms profusely in early July. The last time mine was divided, I planted what I kept in individual eyes and it forms a good groundcover mat.
July 3
As I was out of town when it bloomed in 2015, here's a picture of it in 2013.