This plant grows in damp places, and by the side of streams. It has a small fibrous root, stem four cornered, and from ten inches to two feet high. The flowers are blue, making their appearance in July, and the seed-vessels of a light green color, each one containing four seeds.
" Scullcap has a prominently bitter taste," says Mattson, "and is the best nervine I ever employed; it is also tonic and anti-spasmodic. It is particularly useful in delirium tremens, St. vitus' dance, convulsions, lockjaw, tremors, ague and fever, tic doulourex, and all nervous affections. It may be given with advantage to children, when health is impaired from the effects of teething."
"The warm infusion may be drunk freely through the day, or a heaped teaspoonful of the powdered leaves, with rather more than an equal quantity of sugar, steeped in a teacupful of boiling water, may be taken at a dose, and repeated as often as the symptoms require."