||Wet, swamps, along streams and rivers
||Flowers are violet-blue, pink, or white and are found singly or in pairs in leaf-axils. They are about 1″ long, tubular at the base flaring into 2 lips. The upper lip is hooded, forming a “skullcap”.
||Leaves are opposite in pairs, stalkless, and narrow with pointed tips. Margins are slightly toothed.
||Stems are square in cross section, erect, and hairy.