Arrow-Leaved Tearthumb
Polygonum sagitarium
Family: Polygonaceae

Habitat:

Stream and river banks, other wet soils

Location relative to water:

Rooted onshore

Leaves:

  • Oval to lance-shaped
  • Arrowhead-shaped at base
  • 3-5 cm long (1-2 inches), 2.5 cm wide (0.9 inches)
  • Basal lobes pointing downwards
  • Petioles long on lower leaves, short on upper leaves above stipules

Flowers:

  • White or pink
  • Round racemes up to 1.0 cm long (0.4 inches)
  • On long stalks at ends of stems

Fruit:

  • Shiny achene, brown or black
  • Three-angled, appearing July-September
 
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