I'll keep looking for an actual species description but here are photos of
Dianthus myrtinervius in nature:
http://www.greekflora.gr/el/fl...
See fourth photo down, taken in the wild (Macedonia):
http://www.srgc.net/forum/inde...
Here are photos of
Dianthus deltoides forms that are very similar to the plant in the photo:
http://viaurnature.e-monsite.c...
Scroll down in this one:
http://kaycreates.hubpages.com...
The photo Robert posted is probably also
Dianthus deltoides - it looks like a pretty typical one.
These photo should also help to show how
D. myrtinervius is different from the plants shown. It's
D. myrtinervius ssp.
caespitosus, a particular subspecies form that is smaller yet.
Note how the plant form (both photos), buds (first photo) and flowers (second photo) differ from those in the photos posted for this entry: