Lippia alba is a species of flowering plant in the verbena family, Verbenaceae, that is native to southern Texas in the United States, Mexico, the Caribbean, Central America, and South America. The species is also present in Australia and India, where it is probably a human introduction. Common names include bushy matgrass, bushy lippia, hierba negra, and pitiona. It is a multi-branched shrub, reaching a height of 1.5 m (4.9 ft). Leaves measure 1 to 3 cm (0.39 to 1.18 in) in length and 0.9 to 2 cm (0.35 to 0.79 in) in width and are opposite or in threes. Flowers with white, pink, or light blue-purple corollas form on spikes 2 cm (0.79 in) long.