Add to ORKGClematis occidentalis (Hornemann) de CandolleC. columbiana (Nutt.) T.+G.; Clematis verticillarispurple clematis;purple virgin's-bower;western purple clematis;western blue clematis;western blue virgin's-bower;northern blue clematisoccidentalisMt. Rowegrassy damp S.E. watershed6000 feetblu