Dam it does look similar, my main concern is that sp. Floriferous is meant to occur west of the GDR and so shouldn't be up on these coastal escarpments. The best explanation I think is that this plant is a particularly pink form of our regular C.amara
There seemed to be quite a big group of white flowering plants growing together and a bit further up the knoll was a group of these red flowering plants. I think the leaves on the white and red ones looked pretty similar.