TRILLIUM RECUR VA TUM. 2 1 5 



i. The seed. Make several sections in succession from 

 the base of the seed, and an additional section from the 

 middle, all at right angles to the longer axis of the 

 seed. Note in the latter, under low power, 



The colorless tissue, filled with reserve /<?#</ mate- 

 rial, radiating from the center of the seed. 

 The thin brown testa. 



The large-celled tissue of the strophiole, through 

 the middle of which passes a fibre-vascular bundle 

 belonging to the funiculus. 

 In the sections from the base of the seed, note 

 J. The group of small cells lying in a cavity on one 



side the center, the section of the embryo. 

 Under high power, notice 



e. The several sections of the embryo. Draw. 

 In the section from the middle of the seed, notice 

 /. The colorless tissues of the center. 

 g. The tissues of the testa. 



i. The outer layer of oblong cells. 

 ii. An inner layer of more elongated cells. 

 iii. Within this, very delicate cells, not easily 

 made out. 

 h. Draw some of the colorless cells, with adjoining 



testa. 



/. The tissue of the strophiole. Draw. 



Take a surface slice from the seed, and notice 



j. The shape of the surface cells. Draw. 



ANNOTATIONS. 



The most notable advance in Trillium, so far as its 

 gross anatomy is concerned, is the development of a 



