Quillwort corms were once eaten by humans, as well as domestic and wild animals and waterfowl.
Some plants use a corm, also known as a bulbotuber, or bulbo-tuber, which is a short, vertical, swelling underground plant stem, as a storage organ, to survive the winter or other challenging conditions like summer drought and heat (perennation).
Similar to the terms tuberous and bulbous used to describe plants growing from tubers and bulbs, the word cormous typically refers to plants that grow from corms.
A corm is made up of one or more internodes with at least one growth point and protecting leaves that have typically been transformed into skins or tunics.
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