CONTENTS. 



CHAPTER I. 



THE STRUCTURE, FORM AND DEVELOPMENT OF THE GRASSES. 



page: 



Protoplasm ^ 



Cells 1 



Chlorophyll 1 



Roots . 



2 



Trichomes, root-hairs ^ 



The stem ^ 



The leaf 9 



The sheath 9 



The blade 10 



Minute structure of the leaf. 1*^ 



The epidermal system 14 



The epidermis proper 14 



The buUif orm cells - - - - - 16 



The stomata . 16 



Trichomes- -- --- 1^ 



BuUiform cells l''^ 



Movements of leaves 33 



Fibro-vascular bundles - - - 25 



Hypodermal fibrous tissue 36 



Parenchyma of the leaf - - - 28 



The tortion of leaves 29 



Generic and specific characters in the leaf- 30 



The bracts and flowers.. ^^ 



Morphology of the bracts and flowers 33 



Fertilization of the flowers - 37 



The caryopsis or grain — - 41 



The seed - - 41 



