[Smartweeds of the Columbia River Gorge of Oregon and Washington]

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

Inflorescence of 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.

Stem leaf of 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) -- Inflorescence of 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-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, 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)

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