Stems slender, erect or ascending, leafy and usually branched, 5 to 25 inches high, from a perennial root, propagating by slender stolons. Leaves ovate-oblong or ovate-lanceolate, thin, pointed at the apex, rounded or slightly heart-shaped at the base, coarsely toothed, 1 to 3 inches long, on slender petioles, the upper leaves smaller. Flowers blue, several in axillary and also terminal one-sided racemes, one-fourth to nearly one-half of an inch long, sometimes nearly white; the lips of the corolla about equal, the tipper lip arched. Calyx two-lipped, the lips entire, the upper one with a crest or protuberance upon its back.
In wet meadows and marshes, Newfoundland to British Columbia, south to Florida, New Mexico and Oregon. Flowering from July to September.
Memoir 15 N. Y. State Museum
Mad-Dog Or Blue Skullcap - Scutellaria lateriflora