Cascade Penstemon - Penstemon serrulatus
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Very common throughout the Park, to 6000 feet, generally in sunny, moist places on cliffs and banks, as well as along streams. Photographed (left to right) at Louise Lake, July 1, 2014, Tipsoo Lake, August 3, 2013, and along the road crossing Backbone Ridge, June 22, 2014.