STEMS, BULBS AND BUDS 



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type (Fig. 17), which is an underground stem, such as we find 

 in the May apple, Solomon's seal and Iris. This type can 



FIG. 10. Deliquescent type of stem. 



be readily distinguished from roots by the presence of nodes. 

 Weeds with stems of this type are very difficult to destroy. (9) 



