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
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
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
{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
A short thick solid food-storing underground stem, sometimes bearing papery scale leaves, as in the crocus or gladiolus. Vertical, fleshy, underground stem that acts as a vegetative reproductive structure in certain seed plants. It bears membranous or scaly leaves and buds. Typical corms are those of the crocus and gladiolus. Corms are sometimes called solid bulbs, or bulbo-tubers, but they are distinguished from true bulbs and tubers