Like everyone else, Ajuga reptans was my first thought too, but I've never seen leaf dentition like that on any Ajuga that I've grown or googled.
(Also like everyone else, almost needless to say, I grow a few cultivars too.
)
Ajuga jenevensis is the only reasonably commonly-grown species I can find with somewhat pronounced leaf dentition; however, this plant is not it.
Sorry, but I'm not getting an Ajuga reptans vibe off this plant. It certainly looks like Lamiaceae.
Cheryl, would you mind if I posted your photos on other plant identification sites?
