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Polygonum amphibium var. stipulaceum
Polygonum amphibium L. var. stipulaceum Coleman
Water Smartweed
Polygonaceae (Buckwheat Family)
Synonym(s): Persicaria amphibia var. stipulacea, Persicaria mesochora, Persicaria nebraskensis, Polygonum amphibium ssp. laevimarginatum, Polygonum amphibium var. hartwrightii, Polygonum coccineum var. rigidulum, Polygonum fluitans, Polygonum hartwrightii, Polygonum inundatum, Polygonum natans
USDA Symbol: POAMS
USDA Native Status: L48 (N), AK (N), CAN (N), SPM (N)
Polygonum amphibium var. stipulaceum has short oval flower clusters and is not especially aggressive. The pink flower masses of this variety of Polygonum amphibium are very attractive, but since the plants grow quickly, they can become an unwelcome weed in decorative ponds.
Plant Characteristics
Duration: PerennialHabit: Herb
Fruit Type: Achene
Size Notes: Stems prostrate to ascending to erect, up to about 4 feet long in terrestrial plants, up to about 10 feet in some aquatic plants.
Bloom Information
Bloom Color: Red , PinkBloom Time: Jun , Jul , Aug , Sep
Distribution
USA: AK , AZ , CA , CO , CT , DC , DE , IA , ID , IL , IN , KS , KY , MA , MD , ME , MI , MN , MO , MT , ND , NE , NH , NJ , NM , NV , NY , OH , OR , PA , RI , SD , UT , VA , VT , WA , WI , WYCanada: AB , BC , MB , NB , NL , NS , NT , ON , PE , QC , SK , YT
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Santa Barbara Botanic Garden - Santa Barbara, CA
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Additional resources
USDA: Find Polygonum amphibium var. stipulaceum in USDA PlantsFNA: Find Polygonum amphibium var. stipulaceum in the Flora of North America (if available)
Google: Search Google for Polygonum amphibium var. stipulaceum
Metadata
Record Modified: 2023-05-02Research By: TWC Staff