Lysimachia Punctata

I started seeing this plant in English Gardening books but rarely in American gardens.  It has been here for some time though.  It is a bit spready, if not invasive.  It is related to Mint after all.  I looked for this for ages before I found it in a coffee can on the side of a road for $1.00.  Then after years of people asking what it was I started finding it in nurseries.