Erysimum pyrenaicum Pyrenean Treacle Mustard
We didn't see huge numbers of this plant but it is an obvious member of the Wallflower genus which can be a dwarf plant in flower. It flowers from 5,500 feet upwards.
LHS: Sorteny National Park 21st June RHS: En route to Lake Engolasters, Andorra 22nd June 2012
Added on 8th December 2012