STEMS, BULBS AND BUDS 



33 



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 diificult to destroy. (9) 



