water smartweed

(Persicaria amphibia)

               
Conservation Status

IUCN Red List

LC - Least Concern

water smartweed

NatureServe

N5 - Secure

SNR - Unranked

Minnesota

not listed

Wetland
Indicator
Status

Great Plains

OBL - Obligate wetland

Midwest

OBL - Obligate wetland

Northcentral & Northeast

OBL - Obligate wetland

Nativity

Native

Occurrence

Common and widespread

Habitat

Wet to moist. Meadows, pond edges, marshes.

Flowering

June to September

     
Flower Color

Pink to red

     
Height

12 to 60

     

Identification

This plant may be aquatic, floating on water; emergent, rising out of standing water; or terrestrial, growing in periodically inundated or merely permanently moist areas.

The upper surface of the leaves are shiny.

The inflorescence is long and is interrupted near the base. The flowers are pink to red.

 
Similar
Species

 


Distribution Distribution Map   Sources: 2, 3, 4, 5, 7, 28.

Comments

 


Taxonomy

Family:

Polygonaceae (buckwheat)

 

Subfamily:

Polygonoideae

 

Tribe:

Persicarieae

 
Synonyms

Persicaria amphibia var. emersa

Persicaria amphibia var. stipulacea

Persicaria coccinea

Persicaria mesochora

Persicaria muehlenbergii

Persicaria muhlenbergii

Persicaria nebraskensis

Polygonum amphibium

Polygonum amphibium ssp. laevimarginatum

Polygonum amphibium var. coccineum

Polygonum amphibium var. emersum

Polygonum amphibium var. hartwrightii

 

Polygonum amphibium var. stipulaceum

Polygonum coccineum

Polygonum coccineum var. pratincola

Polygonum coccineum var. rigidulum

Polygonum coccineum var. terrestre

Polygonum fluitans

Polygonum hartwrightii

Polygonum inundatum

Polygonum muehlenbergii

Polygonum muehlenbergii var. terrestre

Polygonum muhlenbergii

Polygonum natans

 
Common
Names

water knotweed

water persicaria

water smartweed


 

 

 

 

 

 

 

 

 

 

       

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Habitat

  water smartweed    
       

Plant

  water smartweed   water smartweed
       
  water smartweed   water smartweed
       

Inflorescence

  water smartweed   water smartweed
       
  water smartweed   water smartweed
       
  water smartweed    
       

Flowers

  water smartweed   water smartweed
       

Leaves

  water smartweed   water smartweed
       
       

 

Camera

     

Slideshows

   
  Polygonum amphibium stipulaceum WATER KNOTWEED
Frank Mayfield
 
  Polygonum amphibium stipulaceum WATER KNOTWEED  

 

slideshow

     

Visitor Videos

   
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Other Videos

 
  Water Knotweed (Persicaria amphibia, synoniem: Polygonum amphibium) - 2012-08-04
W3stlander
 
   
 
About

Published on Aug 7, 2012

Persicaria amphibia (syn. Polygonum amphibium) is a species of flowering plant in the knotweed family known by several common names, including water knotweed, water smartweed, and amphibious bistort.

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Veenwortel (Persicaria amphibia, synoniem: Polygonum amphibium) is een plant uit de duizendknoopfamilie (Polygonaceae).

 
     

 

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