English Cinquefoil, Trailing Tormentil
Potentilla anglica
Synonym: Potentilla procumbens
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English cinquefoil as seen at the headquarters for the Tualatin River National Wildlife Refuge......September 19, 2011.
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- 
- 
Close-ups of the flowers and leaves of english cinquefoil as seen at the headquarters for the Tualatin River National Wildlife Refuge........September 19, 2011.
Paul Slichter