HENBIT, Lamium amplexicaule L. 1, entire plant; 2, flower; 3, seeds with part of calyx; 4, single seed. Annual, reproducing by seeds. Roots fibrous. Stems 4 to 16 inches (10 to 40 cm) tall, slender, smooth, 4-angled, with many branches that are more or less prostrate with ascending tips; frequently rooting where the nodes are in contact with ground. Leaves opposite, hairy, with rounded teeth. Lower leaves with petioles; the upper without petioles and clasping stem. Flowers in whorls in the axils of upper leaves, tubular but 2-lipped, about 3/8 inch (9 mm) long, pinkish to purple, surrounded at base by calyx with 5 sharp teeth. Seeds borne 4 in a pod, sharply 3-angled, grayish-brown, about 1/16 inch (1.5 mm) long. Found in gardens, cultivated fields, and waste places, especially those with rich soil.