erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States
[ Syn: horse balm , horseweed , stoneroot , stone-root , stone root , collinsonia canadensis ]
a plants of the genus Pilea having drooping green flower clusters and smooth translucent stems and leaves
[ Syn: clearweed , dead nettle , pilea pumilla ]