Houndstongue
Cynoglossum officinale

Weed Infestation
Hounstongue infestation
Houndstongue is a native of Europe. It thrives in disturbed soils along roadsides, trails, in pastures, and rangelands. Because of the bur-like seed, it spreads widely along travel corridors as a passenger on clothing or animal fur. It is toxic to livestock.
Adult
Hounstongue adult
Houndstongue is a one to four foot tall biennial.
Rosette
Hounstongue rosette
Basal leaves are about three inches wide with a hairy surface. Upper leaves are narrower, about one inch wide and have a curled appearance, and partially clasp the stem.
Flower
Hounstongue flower
Small reddish purple flowers form in the upper portions of the plant along stems borne in leaf axils. Bloom is in early summer.
Seed Burs
Hounstongue burs
Each flower produces four green bur-like fruits that turn brown as they mature.
 
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