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Aster Himalaicus
My guess is Aster? After a lot of research pinned on Aster Himalaicus.
Monkey mind, this is Erigeron, have a look here:
http://www.google.co.in/imgres?q=Erigero...
I´d vote for Aster too - Aster amellus? Mountain Aster
oh wait no, my bad - this is Aster alpinus - Alpine aster