CONTENTS. 



29. 



CHAPTER III. 

 Morphology of the External Conformation of Plants. 



PAGE 



Difference between Members and Organs. Metamorphosis . . .128 



Leaves and Leaf-forming Axes 131 



Hairs (Trichomes) 138 



The Root 140 



Various Origin of Equivalent Members 148 



Different Capacity for Development of the Members of one Branch-system 155 

 The Relative Positions of Lateral Members on a Common Axis . . 166 



Directions of Growth .182 



Characteristic Forms of Leaves and Shoots 190 



Alternation of Generations ' . 202 



BOOK II. 

 SPECIAL MORPHOLOGY 



AND OUTLINES OF CLASSIFICATION. 



Group L Thallophytes 



Class I. Algae 

 „ 2. Fungi . 

 Group n. Characeae 



Class 3. Characeae 

 Group in. Museineae 



Class 4. Hepaticae 

 „ 5. Mosses 

 Group IV. "Vascular Cryptogams 

 Class 6. Ferns . 

 „ 7. Equisetaceae 

 „ 8. Ophioglossaceae 

 „ 9. Rhizocarpeae 

 „ 10. Lycopodiaceae 

 Group V. Phanerogams 



Class II. Gymnosperms 

 Sub-group. Angiosperms . 



Class 12. Monocotyledons 

 „ 13. Dicotyledons 



207 

 208 

 238 

 278 

 278 

 292 

 296 

 311 

 335 

 340 

 362 

 378 

 383 

 400 

 421 



433 

 466 



541 

 556 



