In botany, a rhizome (from "rootstalk")'s a characteristically horizontal stem of a plant that's usually found underground, often sending out roots and shoots from its nodes. Plants with underground rhizomes include ginger, bamboo, the Venus Flytrap, Chinese lantern, Western poison-oak, hops, and turmeric, significant for their medicinal properties, and the weeds Johnson grass, bermuda grass, and purple nut sedge. Some plants have rhizomes that grow above ground or that lie at the soil surface,… (More on Rhizome)