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This illustration shows the shortened types of stems: A, corm of jack-in-the-pulpit. At left surface view showing lateral buds, roots and sheathing leaf arising from top of shortened stem. At right sectional view with folded leaf, l, in bud at apex stem. B, bulb type of shortened stems. At left bulb of onion showing the ensheathing leaves which are swollen at their bases with food, thus forming the bulb. At right, section of a bulb of hyacinth showing the fleshy leaves attached to the very short stem and in the center of the bulb a flower cluster.


buds, onion, lilies, bulb




Carlton C. Curtis, Nature and Development of Plants (New York: Henry Holt Company) 113


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