Yes, very familiar with it - an extremely hardy and long-blooming groundcover plant. It's name seemed somewhat mysterious many years ago but I thought it had been eventually come to be accepted, at least in cultivation.
I suspect part of the problem is a change in genus name... (can't remember off-hand the new genus name for most of what were
Veronica.... assuming it hasn't changed again since then...
), but I wouldn't be surprised if the species itself is again in question.... as with so very many plants in this current vogue of "lumping" species. I haven't yet been able to post the majority of
Veronica species I grow to this site. Guess I'll figure it out eventually.