Ontario Weeds: Striate knotweed
Excerpt from Publication 505, Ontario Weeds,
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Table of Contents
- Other Names
- General Description
- Stems and Leaves
- Similar Species
- Related Links
Name: Striate knotweed, Polygonum
Other Names: POLAH, renouée coriace, Erect knotweed
Family: Buckwheat or Smartweed Family (Polygonaceae)
General Description: Annual reproducing only by seed.
Striate knotweed, left. Prostrate knotweed, right.
Stems & Leaves: Coarser, more
erect stems than Prostrate knotweed, and broader and more rounded
leaves. Triangular seeds are smooth and olive-coloured. All knotweeds
have wiry stems with swollen nodes, membranous ocrea, and tiny flowers
arising inside the ocrea in leaf axis.
Habitat: This plant sometimes occurs in similar situations as Prostrate knotweed, especially roadsides.
Similar Species: It is distinguished from Prostrate knotweed by its coarser, more erect stems and broader, more rounded leaves.
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