226 SHEPHERD' S P URSE. 



E. THE FLOWER. Note 



1. The four sets of organs and the number of parts in each. 



2. The receptacle, the enlarged end of the stem. 



3. The sepals. 



a. The number of whorls. 



b. The shape. 



c. The color in fresh specimens. 



d. Draw a single sepal. 



4. 1\& petals. 



a. The number of whorls. 



b. The j^a/*. 



<r. The color in fresh specimens. 

 </. Draw a single petal. 



5. The stamens. 



a. The number of whorls, and number of stamens in 

 each. 



b. The lengths and positions compared with one 

 another. 



c. The position of the long pairs and short single 

 stamens with reference to the petals. 



d. The four greenish elevations on the receptacle, 

 nectaries, alternating with the paired and single 

 stamens. 



c. The filament, to the tip of which is attached 

 /. The anther. Note 

 i. The two theca. 

 ii. The very narrow connective. 

 iii. The lines of dehiscence (best seen in the anther 



of an advanced bud), 

 iv. The shape of apex and base. 

 v. The different appearance of the inner and 

 outer faces. 



