PLATE XV. 



Figs. 



1. Trifolium repens (Dutch Clover). A plant with 

 numerous leaves producing four leaflets. (L. A. 

 Boodle photo.) p. 170. 

 2, 3. Brassica oleracea (Cabbage). Fig. 2. — An ascidium 

 (pitcher) growing from the upper surface of the 

 leaf. p. 196. Fig. 3. — A "hypoascidium," repre- 

 senting an entire leaf. p. 198. 



