richweed

(noun) erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States. Synonyms: horse balm, horseweed, stoneroot, stone-root, stone root, Collinsonia canadensis.

(noun) a plants of the genus Pilea having drooping green flower clusters and smooth translucent stems and leaves. Synonyms: clearweed, dead nettle, Pilea pumilla.