Northern Prairie Wildlife Research Center
Canada Woodnettle (Laportea canadensis)
- Family: Nettle (Urticaceae)
- Flowering: May-August.
- Field Marks: This nettle is distinguished by its
stinging hairs and alternate leaves.
- Habitat: Along streams, low woods.
- Habit: Perennial herbs from thickened rootstocks.
- Stems: Erect, branched or unbranched, with stinging
hairs, up to 2 1/2 feet tall.
- Leaves: Alternate, simple, ovate, pointed at the tip,
rounded at the base, coarsely toothed, hairy, up to 6 inches
- Flowers: Many tiny flowers crowded into branched
clusters, the male flowers separate from the female flowers, but
usually on the same plant, each flower greenish white, up to 1/12
- Sepals: 4-5, green, free from each other.
- Petals: 0.
- Stamens: Usually 4.
- Pistils: Ovary superior.
- Fruits: Achenes flat, asymmetrical, nodding on a
winged stalk, up to 1/6 inch long.
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