Erigeron Karvinskianus

Used be Erigeron mucronatus which was a bit easier to spell ;-) Interestingly, this is a plant which has made its home on our walls in my lifetime. I never saw it until a visit to France in 1966. Now it is all over the place, including my garden. It is not a huge problem since it occupies a niche which doesn't really compete and it is a pretty addition to our flora. Often found in masonry alongside Corydalis lutea, Campanula portenschlagiana and Centranthus ruber.