Columbia Clematis, Rock Clematis, Western Blue Virginsbower
Clematis columbiana var. dissecta
Synonym: Clematis occidentalis var. dissecta

Rock clematis as seen along Forest Road #3507, Wenatchee National Forest..........July 8, 2010.
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Additional close-up photos of rock clematis as seen along Forest Road #3507, Wenatchee National Forest..........July 8, 2010. Note the lobed leaves which helps differentiate this taxa from the similar western clematis (Clematis columbiana var. columbiana).
Paul Slichter