224 H. B. Williamson : 



EXPLANATION OF PLATES XIIL, XIV., AND XV. 



All drawings of leaves are natural size. Where the calyx is 

 shown without reference letter it is natural size. 

 a. Upper and low^er calyx lobes x 2. 

 h. Bract X 2. 



c. Bracteolex 2. 



d. Ovary and style x 2. 



