CONTENTS. 



CHAPTER I. 



THE STRUCTURE, FORM AND DEVELOPMENT OF THE GRASSES. 



PAGE 



Protoplasm 1 



Cells 1 



Chlorophyll 1 



Roots 2 



Trichomes, root-hairs _ 3 



The stem 5 



The leaf 9 



The sheath 9 



The blade.- 10 



Minute structure of the leaf. - --- 13 



The epidermal system 14 



The epidermis proper 14 



Thebulliform cells.. 16 



The stomata 16 



Trichomes 16 



Bulliform cells 17 



Movements of leaves. - 23 



Fibro-vascular bundles 25 



Hypodermal fibrous tissue 26 



Parenchyma of the leaf 28 



The tortion of leaves 29 



Generic and specific characters in the leaf 30 



The bracts and flowers. 33 



Morphology of the bracts and flowers 33 



Fertilization of the flowers 37 



The caryopsis or grain 41 



The seed... 41 



