English: Mad-dog; Skullcap; Virginian Skullcap; Blue skullcap; Mad dog skullcap; Side-flowering skullcap; Skullcap; Scullcap; Mad-dog weed; Mad weed; Helmet flower; Quaker bonnet; Blue pimpernel; Hoodwort; Mad dog.
Region: North America.
Content: flavonoids; diterpenes, cytotoxic; phenolics, baicalin, baicalein, wogonin, oroxylin A; 5,6,7-trihydroxy-2'- methoxyflavone and its 7-O-glucuronide; scutellarin, hydrolysis into scutellarein; alpha-cubebene; alpha-humulene; beta-elemene; calamenene; delta-cadinene; sodium chloride.
BotanyHardy perennial herb; upright; 60 to 80 cm in maximum height.
Habitat: wetlands, near marshes, meadows.
Flowers: blue; to 1 cm long; along the length of side branches that grow from the leaf axils.