AMERICAN GERMANDER, Teucrium canadense L. 1, upper part of plant; 2, portion of stem and leaves; 3, diagram of growth habit showing underground rhizome; 4, flower. Perennial, reproducing from long slender rhizomes. Stems square, pubescent, especially on the angles, 1 to 2 feet (30 to 60 cm) tall, often branching. Leaves opposite, ovate, acute or acuminate at tip, rounded at base, finely toothed, pubescent, and short petioled. Inflorescence spikelike, with several pink-purple, irregularly lobed flowers at each node. Seeds borne 4 in a nutlet, light to dark brown, surface covered with network of veins or ridges. Found on moist soils mostly in cultivated crops.