Physocarpus capitatus, commonly called Pacific ninebark or tall ninebark, is a species of Physocarpus in the rose family native to western North America.
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Coastal Processes of the Whatcom County Mainland (dnr.wa.gov)Numerous natural erosional and depositional processes operate upon shorelines to create a diversity of coastal landforms. Waves are among the most important causes of this diversity as they remove, build, and shape beaches and sea cliffs.