TABLE OF CONTENTS xl 
PAGE 
maize, 136—Impervious seed-coverings, 137—Self-burial, 
137—Water-grasses, 138—Propagation by bulblets, 139 
—Plant societies, 139—Mesophytes, 140—Xerophytes, 
141—Prairie, 142—Sandy soil, 143—Sand-dunes, 143— 
Pine-barrens, 144—Rocks, 144—Deserts, 144—Halo- 
phytes, 146—Hydrophytes, 146—Geographical dis- 
tribution, 147—Distribution of grasses, 148—Distri- 
bution of species, 148—Circumpolar distribution, 149— 
Generic distribution, 149. 
CHAPTER XIV 
TAXONOMY OR CLASSIFICATION. . . . . . . . 151-158 
Species, 151—Genera, 152—The grass family and its 
subdivisions, 154—The two series of tribes, 154—The 
tribes of grasses, 155—The more important genera of 
grasses, 156—Characters used in classification, 157— 
Phylogeny, 157. 
CHAPTER XV 
ren ROMIRIE J lk lw ee Ck el SOS 
Tripsacum L., 159—Euchlena Schrad., 160—Zea L., 
161—Coiz L., 162. 
CHAPTER XVI 
TriseE I]. Andropogonee . . «eae t ABS 
Miscanthus Anderss., 166—Saccharum L., 166—Eri- 
anthus Michx., 167—Subtribe Huandropogonex, 167— 
Andropogon L., 169—Cymbopogon Spreng., 169—Holcus 
L., 170—Classification of the sorghums, 172—Tribe III. 
Naziex (Zoysiex), 173—Tribe IV. Melinidex (Triste- 
ginex), 175. 
