Cynoglossum officinale (houndstongue, houndstooth, dog's tongue, gypsy flower, and rats and mice due to its smell) is a herbaceous plant of the family Boraginaceae.
It can be either annual or biennial. Leaves are greyish and softly haired, lanceolate to oblong. Reddish-purple funnel-shaped flowers bloom between May and September.
Found in most parts of Europe, and also North America, where it was accidentally introduced. It lives in wet places, sand dunes, waste land and hedges.
Houndstongue may ...
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*All information is based on published scientific research