Campanula saxifraga
Very commonly grown in gardens in Czechia (Czechoslovakia) and as a speciality in alpine gardens in the United Kingdom and Ireland, this beautiful dwarf Campanula is native to Iran and the eastern Caucasus. This one is probably ssp saxifraga and as its name suggests, is usually found in alpine and subalpine regions on rocks, rock crevices or screes.
Alpine slopes near Terbida, Russian Caucasus, 25th June 2016
Added on June 16th 2017