Cunningham's Encyclopedia of Magical Herbs - Scott Cunningham 1985

Houndstongue
The Herbs

(Cynoglossum officinale) G

Folk Names: Dog-Bur, Dog’s Tongue, Gypsy Flower, Sheep Lice, Tongue of Dog, Woolmat

Gender: Masculine

Planet: Mars

Element: Fire

Powers: Tying Dog’s Tongues

Magical Uses: If placed in the shoe, this herb will prevent dogs from barking at you, in effect, “tying” their tongues.