Persicaria wallichii | Himalayan knotweed

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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:

Leaf: Alternate
Plant Observed beginning of June thru 3rd week of October
Noxious weed in OR.

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)	Where the plant has been found credits
Habitat where plant was found Disturbed Riparian Forest Brush		Elevation (feet) vs. Time of Observation (Flowering) credits