corm

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corm

(korm) [Gr. kormos, a trimmed tree trunk]
A short, bulb-shaped underground stem of a plant such as the autumn crocus, a source of colchicine.
Medical Dictionary, © 2009 Farlex and Partners

corm

a modified underground stem found in some MONOCOTYLEDONS, for example crocus and meadow saffron, that is usually broader than high and contains no fleshy scale leaves (as in the BULB) but rather has its food reserves in the stem. See Fig. 120 .
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005