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Houndstongue
- Cynoglossum officinale
Family: Boraginaceae
TPIUC
Description
Houndstongue is a biennial with a thick woody taproot. The leaves and stem are usually softly pubescent. The basal and lower leaves are oblong to oblong-lanceolate tapering to a long petiole-like base. The upper leaves are alternate becoming shorter and narrower with the uppermost leaves appearing sessile and almost clasping. The cymes are numerous, solitary in the axils of the upper leaves becoming raceme-like in fruit. The flowers are reddish-purple, broadly funnelform in shape. The fruit is a brown nutlet covered with short barbed bristles.
Interesting facts
During its first year of growth, Houndstongue appears as a leafy rosette. During the second year of growth, the coarse erect plants can reach 6 dm tall becoming branched above. It can invade disturbed pastures, roadsides, forest edges, and meadows. Plants often emit a musty odor.
Houndstongue is toxic to horses and cattle. Alkaloids contained within the plant may cause liver cells to stop reproducing.
VIDEO
Links to more information
Website, video, and graphics by Rob Nelson
For more information on this plant or management please contact US Army Corp of Engineers
