viii CONTENTS. 



EXERCISE PAGE' 



CHAPTER THIRTEENTH. THE ORCHIDACE.E. 

 LXX. Characters of the Orchidacecc . . . . 167 



CHAPTER FOURTEENTH. THE GRAMINE^E. 

 LXXI. Characters of the Gramineae 171 



CHAPTER FIFTEENTH. FLOWERLESS PLANTS. 



L.XXII. Ferns 176 



LXXIII. Reproduction of Ferns 177 



LXXIV. Mosses . . . . ' . . . . .180 

 LXXV. Fungi . . . . ' . '. ' . . .182 



LXXVI. SYSTEMATIC BOTANY 185 



