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Persicaria wallichii
Himalayan knotweed Smartweed-Buckwheat Family
Persicaria wallichii Polygonaceae
--more--
common name
  Himalayan knotweed
accepted scientific name
  Persicaria wallichii Greuter & Burdet
rules for finding collection records
  Persicaria wallichii (38)
  Polygonum polystachyum (52)
family name
  Polygonaceae
Image Author: ©2005 Tony Rodd
Image License: CC BY-NC-SA
Image Source
Category: Wildflowers
Flowers: No obvious petals, Five petals
Petal colors: color
Leaf: Alternate
Plant Observed beginning of June thru 3rd week of October
How Likely at this Location (12%)
Name Match (100%)
Plant Showiness (36%)
Links to Plant Descriptions
WTU Herbarium (19)
E-Flora BC
Wikipedia
eFloras.org
Go Botany
Jepson
SEINet
USDA PLANTS profile
Links to Plant Photos
Wikimedia Commons (13)
Carolinas & Georgia (8)
G.D.Carr (7)
Cal Photos (5)
Salicicola (14)
base map where plant found
mag select
Disturbed
Riparian
Forest
Brush
 Native Plant Status
native status map native status map native status map native status map native status map
native Not Native
native Not Present

Invasive in some regions.
grid lines base