Persicaria pensylvanica (L.) M.Gómez
Family: Polygonaceae
Pennsylvania knotweed,  more...
[Persicaria mississippiensis (Stanford) Small,  more]
Persicaria pensylvanica image
Botanical Illustration  
Etymology: Persicaria: peach-like, the medieval name for knotweed
Plants: erect, annual, 2'-5' tall forb; stems with nodes either smooth or cut, but not hairy; taprooted
Leaves: alternate, variable but usually lance-like, often woolly beneath
Flowers: white-green to pink, 4- or 5-parted, 1/8" long, petals and petal-like sepals connected at the base; inflorescence many 1/3"-2" long, nodding, spike-like clusters on a stalk jointed at the top; blooms July-Sept.,
Fruits: dry seed flat or concave on both sides
Habitat: wet to moist; disturbed sites
Persicaria pensylvanica image
Botanical Illustration  
Persicaria pensylvanica image
Botanical Illlustration  
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
Persicaria pensylvanica image
   View Genus       View Specimen Records