I grew a plant labeled Dianthus myrtinervius years ago which was just a redder (almost crimson) Dianthus deltoides. When I researched the name, it was obvious the original plant was quite different. In recent years the true D. myrtinervius is being sold by several mail order nurseries. I've grown it for years, but last spring I took this picture in the garden of Sally Boyson, editor of our local chapter's newsletter. This shows the plant growing much as it might in nature: truly delightful--like a Silene acaulis that is growable and actually blooms!