Ontario Wildflowers website

Arrow-leaved Tearthumb
Persicaria sagittata
(formerly Polygonum sagittatum)

Arrow-leaved Tearthumb (Persicaria sagittata) Other common names: Arrow-leaved Smartweed

Other scientific names: Polygonum sagittatum, Tracaulon sagittatum

French names: Renouée sagittée

Family: Smartweed Family (Polygonaceae)

Similar species:
  •   Halberd-leaved Tearthumb (Persicaria arifolia) - The leaves are different shape.

Flowers: Summer;  White;  Indistinguishable parts (petals)

Leaves: Alternate, Simple, Entire

Habitat: Fields and Open Areas, Wet Areas

Books: Newcomb's Wildflower Guide: 402   

Native/Non-native: Native

Photographs: 25 photographs available, of which 4 are featured on this page. SCROLL DOWN FOR PHOTOGRAPHS.

Range Map is at the bottom of the page

Arrow-leaved Tearthumb (Persicaria sagittata)

Arrow-leaved Tearthumb flower.

Arrow-leaved Tearthumb (Persicaria sagittata)

This is how this species got part of its common name: note the wicked-looking downward-pointing barbs along the stems.

Arrow-leaved Tearthumb (Persicaria sagittata)

Another photo of the downward-pointing barbs.

Arrow-leaved Tearthumb (Persicaria sagittata)

Arrow-leaved Tearthumb flower buds and a leaf.

Range map for Arrow-leaved Tearthumb (Persicaria sagittata)

PLEASE NOTE: A coloured Province or State means this species occurs somewhere in that Province/State.
The entire Province/State is coloured, regardless of where in that Province/State it occurs.

(Range map provided courtesy of the USDA website and is displayed here in accordance with their Policies)