Not native to Alberta. Annual or biennial. Noxious weed. Poisonous.
By Gustave J. Yaki
Introduced from Europe.
Becoming increasingly common. Noxious weed. Should be pulled before going to seed. POISONOUS if
eaten by man or beast. Stems, stout, erect, to 1.5m tall; with unpleasant smell, sticky-hairy. Leaves,
alternate; oval to oblong; coarse irregular teeth or lobes, wavy edged, sharp tipped, downy, 1-2dm long;
basal leaves on biennial plants may be up to 45cm long, 15cm wide. Flowers, in long 1-sided leafy spikes;
yellow background marked with purple, funnel-shaped, 2-3cm long; soon turning brown; the cup-shaped
sepals dries white, remaining conspicuous overwinter; June-Sept. Fruit, a vase-shaped globular capsule;
seeds, brownish-grey, egg-shaped, with minute, blunt, rounded projections; each plant can produce 100,000
seeds, viable for at least 5 years. Habitat: disturbed places, especially rail-lines, gravel pits. sWeas. at
green bridge; plants pulled before blossoming in 2002.
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