Navigation         Search for a plant: 
 
 

    Persicaria amphibia  (L.) GRAY    
 

Fam.: Polygonaceae / Knotweed Fam.  

Synon.:  Polygonum amphibia  L.

Genus:  Persicaria  (L.) MILL.,  Polygonum  L.
 

Authors:
   L.:  Carl von Linné (Linnaeus, 1707 - 1777), Swedish naturalist who introduced the binary naming system for plants and animals
   GRAY:  Samuel Frederick Gray (1766 - 1828), British pharmacologist and botanist
   MILL.:  Philip Miller (1691 - 1771), English gardener
 

Etymology:
   Persicaria:   peach-like
   amphibia:   growing very wet
   Polygonum:   polys = many, gone = offspring
 

There is a land form and a water form of this plant, which differ in habit and the form of the leaves, but which are not genetically different. The land form reaches flowering rarely, in Germany I haven't seen it in flower but in Sweden.

 

Persicaria amphibia / Water Knotweed, Willow Grass, D Hambrücken 20.6.2008
Fig. 1:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hambrücken 20.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Hambrücken 20.6.2008
Fig. 2:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hambrücken 20.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Hambrücken 20.6.2008
Fig. 3:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hambrücken 20.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Hambrücken 20.6.2008
Fig. 4:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hambrücken 20.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Hambrücken 20.6.2008
Fig. 5:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hambrücken 20.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Hambrücken 20.6.2008
Fig. 6:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hambrücken 20.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Hambrücken 20.6.2008
Fig. 7:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hambrücken 20.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Hambrücken 20.6.2008
Fig. 8:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hambrücken 20.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Hambrücken 20.6.2008
Fig. 9:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hambrücken 20.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Philippsburg 11.9.2008
Fig. 10:  Persicaria amphibia / Water Knotweed, Willow Grass
D Philippsburg 11.9.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Philippsburg 11.9.2008
Fig. 11:  Persicaria amphibia / Water Knotweed, Willow Grass
D Philippsburg 11.9.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Philippsburg 25.8.2012
Fig. 12:  Persicaria amphibia / Water Knotweed, Willow Grass
D Philippsburg 25.8.2012
Persicaria amphibia / Water Knotweed, Willow Grass, D Philippsburg 25.8.2012
Fig. 13:  Persicaria amphibia / Water Knotweed, Willow Grass
D Philippsburg 25.8.2012
Persicaria amphibia / Water Knotweed, Willow Grass, D Lampertheim 10.7.2013
Fig. 14:  Persicaria amphibia / Water Knotweed, Willow Grass
D Lampertheim 10.7.2013
Persicaria amphibia / Water Knotweed, Willow Grass, D Lampertheim 10.7.2013
Fig. 15:  Persicaria amphibia / Water Knotweed, Willow Grass
D Lampertheim 10.7.2013
Persicaria amphibia / Water Knotweed, Willow Grass, D Böblingen 30.8.2008
Fig. 16:  Persicaria amphibia / Water Knotweed, Willow Grass
D Böblingen 30.8.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Böblingen 30.8.2008
Fig. 17:  Persicaria amphibia / Water Knotweed, Willow Grass
D Böblingen 30.8.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Reilingen 15.9.2007
Fig. 18:  Persicaria amphibia / Water Knotweed, Willow Grass
D Reilingen 15.9.2007
Persicaria amphibia / Water Knotweed, Willow Grass, D Reilingen 15.9.2007
Fig. 19:  Persicaria amphibia / Water Knotweed, Willow Grass
D Reilingen 15.9.2007
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 25.9.2011
Fig. 20:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 25.9.2011
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 25.9.2011
Fig. 21:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 25.9.2011
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 25.9.2011
Fig. 22:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 25.9.2011
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 25.9.2011
Fig. 23:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 25.9.2011
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 30.8.2015
Fig. 24:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 30.8.2015
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 30.8.2015
Fig. 25:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 30.8.2015
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 30.8.2015
Fig. 26:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 30.8.2015
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 30.8.2015
Fig. 27:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 30.8.2015
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 15.9.2019
Fig. 28:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 15.9.2019
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 15.9.2019
Fig. 29:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 15.9.2019
Persicaria amphibia / Water Knotweed, Willow Grass, D Mannheim 15.9.2019
Fig. 30:  Persicaria amphibia / Water Knotweed, Willow Grass
D Mannheim 15.9.2019
Persicaria amphibia / Water Knotweed, Willow Grass, D Groß-Gerau 28.7.2017
Fig. 31:  Persicaria amphibia / Water Knotweed, Willow Grass
D Groß-Gerau 28.7.2017
Persicaria amphibia / Water Knotweed, Willow Grass, D Hassloch 30.8.2022
Fig. 32:  Persicaria amphibia / Water Knotweed, Willow Grass
D Hassloch 30.8.2022
Persicaria amphibia / Water Knotweed, Willow Grass, D Rheinhessen, Gau-Odernheim 14.6.2008
Fig. 33:  Persicaria amphibia / Water Knotweed, Willow Grass
D Rheinhessen, Gau-Odernheim 14.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Rheinhessen, Gau-Odernheim 14.6.2008
Fig. 34:  Persicaria amphibia / Water Knotweed, Willow Grass
D Rheinhessen, Gau-Odernheim 14.6.2008
Persicaria amphibia / Water Knotweed, Willow Grass, D Sachsen-Anhalt, Havelberg 18.9.2020
Fig. 35:  Persicaria amphibia / Water Knotweed, Willow Grass
D Sachsen-Anhalt, Havelberg 18.9.2020
Persicaria amphibia / Water Knotweed, Willow Grass, S Västerås Ängsö 29.8.2010
Fig. 36:  Persicaria amphibia / Water Knotweed, Willow Grass
S Västerås Ängsö 29.8.2010
Persicaria amphibia / Water Knotweed, Willow Grass, S Västerås Ängsö 29.8.2010
Fig. 37:  Persicaria amphibia / Water Knotweed, Willow Grass
S Västerås Ängsö 29.8.2010
Persicaria amphibia / Water Knotweed, Willow Grass, S Västerås Ängsö 29.8.2010
Fig. 38:  Persicaria amphibia / Water Knotweed, Willow Grass
S Västerås Ängsö 29.8.2010
Persicaria amphibia / Water Knotweed, Willow Grass, S Tanum 9.8.2010
Fig. 39:  Persicaria amphibia / Water Knotweed, Willow Grass
S Tanum 9.8.2010
Persicaria amphibia / Water Knotweed, Willow Grass, S Lidköping 13.8.2010
Fig. 40:  Persicaria amphibia / Water Knotweed, Willow Grass
S Lidköping 13.8.2010
Persicaria amphibia / Water Knotweed, Willow Grass, E Picos de Europa, Covadonga 7.8.2012
Fig. 41:  Persicaria amphibia / Water Knotweed, Willow Grass
E Picos de Europa, Covadonga 7.8.2012
Persicaria amphibia / Water Knotweed, Willow Grass, IRL County Sligo, Mullaghmore 18.6.2012
Fig. 42:  Persicaria amphibia / Water Knotweed, Willow Grass
IRL County Sligo, Mullaghmore 18.6.2012
Persicaria amphibia / Water Knotweed, Willow Grass, IRL County Sligo, Mullaghmore 18.6.2012
Fig. 43:  Persicaria amphibia / Water Knotweed, Willow Grass
IRL County Sligo, Mullaghmore 18.6.2012
Persicaria amphibia / Water Knotweed, Willow Grass, IRL County Sligo, Mullaghmore 18.6.2012
Fig. 44:  Persicaria amphibia / Water Knotweed, Willow Grass
IRL County Sligo, Mullaghmore 18.6.2012

 


To top
 
Start page
 
Contents
 
Orchids
 
Other Plants
 
Plants acc. to Families
 
.. Relationship:
 
APG
 
trad.
 
.. Scientific Names
 
.. German Names
 
.. English Names
 
.. Bloom Colors
 
.. Flower Anatomy
 
.. Leaf Form
 
.. Regions
 
.. Photo Month
 
.. Fruits + Seed
 
.. Roots + Bulbs
 
Pest Infestation + Deformations
 
Trees
 
Bushes
 
Water Plants
 
Climbers + Twiners
 
Useful Pl.
 
Ornamental Pl.
 
Color Var.
 
Multiple Criteria
 
Biotopes + Groups
 
Botan.Links
 

Copyright: Use of the images and texts only with the author's written permission.