Page authors: Don Knoke, David Giblin
Persicaria amphibia
water smartweed
WTU specimens
Other herbaria
WTU images
Distribution: Widely distributed on both sides of the Cascades crest in Washington; Alaska to California, east to the Atlantic Coast.
Habitat: River, stream, lake, and pond margins in water to 2 meters deep to adjacent moist uplands.
Flowers: July-October
Origin: Native
Conservation Status: Not of concern
Description:
[none provided]
Accepted Name:
Persicaria amphibia (L.) Gray
Publication: Nat. Arr. Brit. Pl. 2: 268. 1821. 1821.
Publication: Nat. Arr. Brit. Pl. 2: 268. 1821. 1821.
Synonyms & Misapplications:
Polygonum amphibium L. [HC]
Polygonum amphibium L. var. coccineum (Muhl. ex Willd.) Farw.
Polygonum amphibium L. var. emersum Michx. [JPM, ILBC4]
Polygonum amphibium L. var. stipulaceum N. Coleman [JPM, ILBC4]
Polygonum coccineum Muhl. ex Willd. [HC]
Polygonum natans Eaton
Polygonum amphibium L. var. coccineum (Muhl. ex Willd.) Farw.
Polygonum amphibium L. var. emersum Michx. [JPM, ILBC4]
Polygonum amphibium L. var. stipulaceum N. Coleman [JPM, ILBC4]
Polygonum coccineum Muhl. ex Willd. [HC]
Polygonum natans Eaton
Additional Resources:
PNW Herbaria: Specimen records of Persicaria amphibia in the Consortium of Pacific Northwest Herbaria database.
WA Flora Checklist: Persicaria amphibia checklist entry.
E-Flora BC: Persicaria amphibia atlas page.
CalPhotos: Persicaria amphibia photos.
USDA Plants: Persicaria amphibia information.
45 photographs:
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