STEMS 141 



Food Storage in Stems 



Suggestion. Test various edible stems, such as potato, 

 onion, artichoke, asparagus, etc., for the various nutrients. 

 Which are richest in starch? Sugar? Protein? 



Test stems of canna, Indian turnip (Jack-in-the-pulpit), 

 and any other plant having fleshy stems. Do they contain 

 food materials? If so, why are they not cultivated for food 

 by man? 



Poisons in Stems 



Cut a bit of Indian turnip corm and touch it to the tongue. 

 Describe the taste. Of what use are such substances to the 

 plant? 



