Richweed
n. erect perennial strong-scented with serrate pointed leaves and a loose panicle of yellowish flowers; the eastern United States 同义词：horse balmhorseweedstonerootstone-rootstone rootCollinsonia canadensis
a plants of the genus Pilea having drooping green flower clusters and smooth translucent stems and leaves 同义词：clearweeddead nettlePilea pumilla