I planted this as "Silene jenisseensis", but while this plant is supposed to form a hard dome, my did not and was stoloniferous to boot... I pulled it out this spring (and sprigs are still coming up here and there). It blooms in late summer here. Foliage got to about 4" tall, reddish on emergence in spring. Any idea what it actually is?
Hmm, on second thought, maybe the other report ("hard dome") is wrong too? I'm confused!!
Here's the eFlora of China description - foliage on my plant seems not out of line:
And photos - the petal shape, flower size(?) and possibly the flower arrangement are not like mine, though: