CONTENTS. XL 



PHANEROGAMS (continued). 



II. GYMNOSPERMS. 



t VEGETATIVE ORGANS. PAGE 



EXTERNAL CHARACTERS 136 



HISTOLOGY OF THE STEM ... 138 



LEAF .149 



ROOT .151 



tt REPRODUCTIVE ORGANS 154 



RIPE SEED AND GERMINATION 160 



PTERIDOPHYTA. 



A. LYCOPODIN.E. 



I. SELAGINELLA. 



SPOROPHORE , 162 



OOPEORE 173 



II. LYCOPODIUM. 



SPOROPHORE 175 



13. FILICINE.E. 



ASPIDIUM. 



MATURE SPOROPHORE. 



EXTERNAL CHARACTERS 186 



ANATOMICAL CHARACTERS TO BE OBSERVED 



WITH THE NAKED EYE 188 



MICROSCOPIC OBSERVATIONS. 



Stem 190 



Root ....... 198 



Leaf . . \. ."..'. ; 201 



Sporangia .... 202 



OOPHORE 204 



YOUNG SPOROPHORE 210 



C. EQUISETINE^l. 



EQUISETUM. 



SPOROPHORE 212 



Sporangia 224 



OOPHORE. .... 226 



