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Polygonum hydropiperoides
Polygonum hydropiperoides Michx.
Swamp Smartweed
Polygonaceae (Buckwheat Family)
Synonym(s): Persicaria hydropiperoides, Persicaria hydropiperoides var. breviciliata, Persicaria hydropiperoides var. euronotora, Persicaria hydropiperoides var. opelousana, Persicaria opelousana, Persicaria paludicola, Persicaria persicarioides, Polygonum hydropiperoides var. adenocalyx, Polygonum hydropiperoides var. asperifolium, Polygonum hydropiperoides var. breviciliatum, Polygonum hydropiperoides var. bushianum, Polygonum hydropiperoides var. digitatum, Polygonum hydropiperoides var. euronotorum, Polygonum hydropiperoides var. opelousanum, Polygonum hydropiperoides var. psilostachyum, Polygonum hydropiperoides var. strigosum, Polygonum opelousanum, Polygonum opelousanum var. adenocalyx, Polygonum persicarioides
USDA Symbol: POHY2
USDA Native Status: L48 (N), AK (I), PR (N), CAN (N)
Swamp Smartweed is a member of the buckwheat family (Polygonaceae) which includes mostly herbs, sometimes shrubs or vines, rarely trees, with small flowers in racemes, spike-like clusters, or in heads. Stems commonly have swollen nodes. (The family name refers to this, deriving from Greek words meaning "many knees".) There are about 40 genera and 800 species, chiefly in north temperate regions. Rhubarb and Buckwheat are sources of food, and a few species are grown as ornamentals.
Plant Characteristics
Duration: PerennialHabit: Herb
Fruit Type: Achene
Size Notes: Up to about 3 feet tall.
Leaf: Dark Green
Bloom Information
Bloom Color: White , Pink , GreenBloom Time: Jun , Jul , Aug , Sep , Oct , Nov
Distribution
USA: AK , AL , AR , AZ , CA , CT , DC , DE , FL , GA , IA , ID , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , ND , NE , NH , NJ , NM , NV , NY , OH , OK , OR , PA , RI , SC , SD , TN , TX , VA , VT , WA , WI , WVCanada: NB , NS , PE
Growing Conditions
Water Use: MediumLight Requirement: Sun
CaCO3 Tolerance: High
National Wetland Indicator Status
Region: | AGCP | AK | AW | CB | EMP | GP | HI | MW | NCNE | WMVE |
Status: | OBL | OBL | OBL | OBL | OBL | OBL | OBL | OBL | OBL |
From the National Organizations Directory
According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:Nueces River Authority - Uvalde, TX
Web Reference
Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.Webref 36 - Jepson eFlora (2019) The Jepson Herbarium, University of California, Berkeley
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Research Literature
Reslit 1299 - Endothall species selectivity evaluation: Northern latitude aquatic plant community (2002) J. G. Skogerboe and K. D. GetsingerReslit 1987 - Phytoaccumulation of trace elements by wetland plants: III. Uptake and accumulation of ten trace elements by twelve plant species (1999) J. H. Qian, A. Zayed, Y. L. Zhu, M. Yu and N. Terr...
Reslit 2128 - Stem elongation response to neighbour shade in sprawling and upright Polygonum species (2000) B. Collins and G. Wein
Reslit 2228 - A Biosystematic Study of the Polygonum hydropiperoides (Polygonaceae) Complex (1980) C. B. McDonald
Reslit 2269 - Viability and dormancy in seeds of Polygonum amphibium L., P. coccineum Muhl. and P. hydropiperoides Michx (1944) O. L. Justice
This information was provided by the Florida WIldflower Foundation.
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Additional resources
USDA: Find Polygonum hydropiperoides in USDA PlantsFNA: Find Polygonum hydropiperoides in the Flora of North America (if available)
Google: Search Google for Polygonum hydropiperoides
Metadata
Record Modified: 2022-12-06Research By: TWC Staff