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Fallopia japonica
Japanese knotweed Smartweed-Buckwheat Family
Fallopia japonica Polygonaceae
--more--
common name
  Japanese knotweed
accepted scientific name
  Fallopia japonica (Houtt.) Ronse Decr.
rules for finding collection records
  Fallopia japonica (470)
  Pleuropterus zuccarinii (0)
  Polygonum cuspidatum (1089)
  Reynoutria japonica (147)
family name
  Polygonaceae
Image Author: ©2007 "MdE"
Image License: CC BY-SA
Image Source
Category: Woody Vines
Flowers: Five petals
Petal colors: color color
Flower size is about 0.33 inches
Leaf: Alternate
Plant Observed 3rd week of April thru end of October
How Likely at this Location (40%)
Name Match (100%)
Plant Showiness (45%)
Links to Plant Descriptions
Minnesota Wildflowers (16)
Illinois Wildflowers (5)
WTU Herbarium (11)
E-Flora BC
Wikipedia
eFloras.org
Mark Turner
bugwood.org
Go Botany
Jepson
Montana Field Guide
SEINet
Flora of Wisconsin (84)
Links to Plant Photos
var. japonica, J. Reveal (57)
Wikimedia Commons (49)
Maryland Biodiversity (22)
Southeastern Flora (27)
Cal Photos (26)
U of Michigan Herbarium (10)
FloraFinder (11)
Walter Muma (10)
Carolinas & Georgia (12)
Missouri Plants (6)
Cal Photos (10)
Salicicola (30)
G.D.Carr (6)
base map where plant found
mag select
Disturbed
Forest
Riparian
Brush
 Native Plant Status
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native Not Native
native Not Present

Invasive in some regions.
grid lines base