CONTENTS. 



CHAPTER I. 



THE STRUCTURE, FORM AND DEVELOPMENT OP THE GRASSES. 



Protoplasm j 



Cells ""/"//"/............' v.. 1 



Chlorophyll j 



Roots 2 



Trichomes, root-hairs ' o 



The stem . 



The leaf "-'"."!""!!"]]!."!."!!!!!" 



The sheath « 



The blade -"i!!!l".""]!!!!!!!!!!!!!!! lO 



Minute structure of the leaf 13 



The epidermal system * -t* 



The epidermis proper "" 14 



The buUiform cells jg 



The Btomata <» 



Trichomes jg 



BuUiform cells j« 



Movements of leaves ]] 23 



Fibro-vascular bundles '..'...'.... 25 



Hypodermal fibrous tissue !!!"!!* 26 



Parenchyma of the leaf -"."."...". 28 



The torsion of leaves ] [ 29 



Generic and specific characters in the leaf .'.'.'..'." 30 



The bracts and flowers g3 



Morphology of the bracts and flowers ."""'* 83 



Fertilization of the flowers \ 87 



The caryopsis or grain "41 



The seed 41 



