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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Polygonum glabrum

Polygonum glabrum Willd.

Denseflower Knotweed

Polygonaceae (Buckwheat Family)

Synonym(s): Persicaria densiflora, Persicaria glabra, Persicaria portoricensis, Polygonum densiflorum, Polygonum portoricense

USDA Symbol: POGL10

USDA Native Status: L48 (N), PR (N)

 

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Plant Characteristics

Duration: Annual
Habit: Herb
Fruit Type: Achene
Size Notes: Up to about 5 feet tall.

Bloom Information

Bloom Color: White , Pink
Bloom Time: Jan , Feb , Mar , Apr , May , Jun , Jul , Aug , Sep , Oct , Nov , Dec

Distribution

USA: AL , AR , DE , FL , GA , KS , KY , LA , MD , MO , MS , NC , NJ , SC , TN , TX , VA

National Wetland Indicator Status

Region:AGCPAKAWCBEMPGPHIMWNCNEWMVE
Status: OBL OBL OBL OBL OBL OBL OBL
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 57 - Atlas of Florida Plants (2020) Institute for Systematic Botany
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 glabrum in USDA Plants
FNA: Find Polygonum glabrum in the Flora of North America (if available)
Google: Search Google for Polygonum glabrum

Metadata

Record Modified: 2023-05-02
Research By: TWC Staff

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