A crocus comes from a corm Corms are sometimes called bulbs, but they are not true bulbs An onion, which is a true bulb, has layers in its underground stem; a crocus is solid Corms, like bulbs, will produce roots only from their bottom
A solid, short, swollen underground stem, usually erect and tunicated, of one year's duration, with that of the next year at the top or close to the old one
An underground storage organ consisting of the swollen base of a stem, with roots attached to the underside
A short, vertical, swollen underground stem of a plant (usually one of the monocots) that serves as a storage organ to enable the plant to survive winter or other adverse conditions such as drought
solid swollen underground bulb-shaped stem or stem base and serving as a reproductive structure
a bulb-like structure formed by enlargement of the stem base, sometimes coated with one or more membranous layers (Benson 1967)
Often lumped as a bulb, and like a true bulb is an underground stem base, but is solid tissue rather than groups of scales An example of a corm is freesia
A specialized part of a stem; a short, enlarged base of a stem where food is stored May be used as a propagule
{i} round underground swollen stem base of certain plants (such as gladioluses, crocuses and cyclamens) that stores food during the winter and serves for asexual reproduction