64 



ELEMENTS OP STRUCTURAL BOTANY. 

 DOG'S-TOOTH VIOLET. 



Fig. 87. 



85. Trillium. This plant 

 (Fig. 85) may be found in 

 flower about the same time as 

 the one just described. The 

 perianth of Trillium consists 

 of six pieces in two sets, but x 

 in this case the three outer 

 leaves are green, like a com- 

 mon calyx. The stamens are 

 six in number. There are 

 three styles, curving outwards, 

 the whole of the inner side of 

 each being stigmatic. The 

 ovary (Fig. 86) is six-angled, 

 and on being cut across is seen 

 to be three-celled. 



Fig. 85. 



Fig. 85. Trillium. Fig. 86. Cross section of the pistil, 



Fig. 87. Net- veined leaf of Trillium. 



