206 SPECIAL EXERCISES ON TYPICAL FLOWERS 



many chambers (locules) in the ovary? Is the flower 

 symmetrical or unsymmetrical ? regular or irregular? per- 

 fect or imperfect? Give reasons for your answers. 



Note. A study of a liliaceous flower will give one more differ- 

 ence between monocotyl and dicotyl plants, namely The floral 

 organs are always in threes or multiples of three. 



Compare arrowwort, iris, spiderwort, and lilies in this respect. 



177. JACK-IN-THE-PULPIT OR SKUNK CABBAGE 



Method. Following the same general plan as outlined in 

 the preceding exercise, answer the following questions : - 



What is the habitat 

 in which this plant 

 grows ? What are the 

 form, position, and 

 venation of the leaf ? 

 What is the nature of 

 the stem (monocotyl 

 or dicotyl) ? Give 

 reasons for your 

 answer. 



From what under- 

 ground part does the 

 plant spring ? De- 

 scribe it. Is it a 

 root or a stem ? Give 

 reason for your an- 



FIG. 91. Jack-in-the-pulpit. T-\ -L j.u 



swer. Describe the 



roots. Cut a slice from the corm (underground part) and 

 touch it to the tongue. Do not chew it or take any portion 

 into the mouth. Only touch it to the tongue. Describe the 

 taste. After having tasted it, what do you think of the 



