Description: There are lots of lovely Mertensias in North America especially, and we don't see a lot of them here. This one came from Kevock nursery I think, last year and seems to be doing quite well (touch wood). Behind it you can see another odd North American - Clematis coactilis - a small, pale flowered relative of C.integrifolia, also bought last year from Beeches' nursery. Date: 29 April 2010, 09:31. Source: Mertensia lanceolata. Author: peganum from Small Dole, England.