Swamp Smartweed, Waterpepper, Water Pepper
Persicaria hydropiperoides
Synonyms: Persicaria paludicola, Polygonum hydropiperoides, Polygonum hydropiperoides var. adenocalyx, Polygonum hydropiperoides var. asperifolium, Polygonum hydropiperoides var. buschianum, Polygonum hydropiperoides var. digitatum, Polygonum hydropiperoides var. hydropiperoides, Polygonum hydropiperoides var. opelousanum, Polygonum hydropiperoides var. psilostachyum, Polygonum opelousanum, Polygonum opelousanum var. adnocalyx, Polygonum persicarioides
Close-up of the inflorescence of swamp smartweed as seen in shallow waters lining the shores of Miller Lake in Rooster Rock State Park in the western Columbia River Gorge.........August 19, 2009.
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Close-ups of a stem leaf and of the inflorescence of swamp smartweed as seen in shallow waters lining the shores of Miller Lake in Rooster Rock State Park in the western Columbia River Gorge........August 19, 2009.
Swamp smartweed meandering across mudflats on the Columbia River Shoreline at the eastern edge of the Sandy River delta, western Columbia River Gorge.........September 29, 2012.
Paul Slichter