TRILLIUM RECUR VA TUM. 203 



a. The shape. 



b. The color in a fresh specimen. 



c. The venation. 



d. Draw a single petal. 



6. The stamens. 



a. The several parts of each. 



The stalk or filament, passing into 

 The connective, on the right and left margins 

 of which are borne 



iii. The pollen sacs, or thecce ; the connective and 

 thecae together constituting the anther. 



b. Draw a stamen. 



Mount a transverse section of the filament, along with 

 one of the anther, and note 



c. The filament. 



\. The outline. 



ii. The uniform ground tissue, containing a cen- 

 tral fibrO'Vascular bundle. 

 iii. Draw. 



d. The anther. 



i. The outline of the connective, and character of 

 its tissues. 



ii. The form of the thecce. The mode of burst- 

 ing is often well shown. 



iii. Draw the section 



e. The pollen, escaped from the thecae and appearing 

 as fine particles. Dust some from an anther and 

 examine dry, noting color and pulverulence. 



7. The carpels. 



a. The part's of each. 



i. The enlarged basal portion, bearing a pair of 

 prominent ridges, united with the bases of the 

 other carpels to form the compound ovary. 



