CONTENTS IX 



CHAPTER XTII.— Secale cereale (Rye). 



Habit of Plant, Roots — Steins, Leaves — Inflorescence — Spike- 

 let — Opening of Flower, Pollination and Fertilization — Matur- 

 ing of Grain, and Mature Grain — Germination of Rye — 

 Classification, and Origin of Rye — Environmental Relations 

 —Uses of Rye— Production of Rye— References iS3-i56 



CHAPTER XIV.— Zea (Corn, Maize). 



Habit of Plant, Roots— "Prop" and "Brace" Roots— Stem 

 —Leaves — Inflorescence— Staminate Inflorescence — Stami- 

 nate Spikelet — Pistillate Inflorescence — Pistillate Spikelet — 

 Hermaphroditic Flowers — Opening of the Flowers, and Pollina- 

 tion — Fertilization, and Development of the Grain — ^Xenia 

 in Corn —Variation in the Corn Plant — Results of Self-fertiliza- 

 tion in Corn — The Mature Grain of Corn — Corn Starch 

 Distinguished from the Other Common Starches — Germina- 

 tion of Corn — Classification — Key to "Species Groups" of 

 Corn — Origin of Maize — Environmental Relations — Uses of 

 Corn — Production of Corn — References 157-190 



CHAPTER XV. — Andropogon Sorghum (Sorghums). 



Habit of Plant, and Roots — Stems and Leaves — Inflorescence 

 — Spikelets and Flowers — Fertile Spikelet — Staminate Spike- 

 let — Opening of Flowers and Pollination — Fruit — Varieties — 

 Key to Principal Groups of Sorghum — Origin of Sorghums — 

 Environmental Relations — Uses of Sorghums — References. .191-201 



CHAPTER XVI.— Oryza sativa (Rice). 



Habit, Roots, Stems, Leaves — Inflorescence and Spikelet — 

 Pollination and Fertilization — Grain — Milling of Rice— : Varie- 

 ties — Distribution, and Closely Related Species — Uses of Rice 

 — Environmental Relations — The Production of Rice — 

 References 202-209 



CHAPTER XVIL— Millet. 



Key to Principal Economic Types (Species) of Millet and 



Some Closely Related Common Weed Grasses 210-211 



Pennisetum glaucum (Pearl Millet) — Stem — ^Leaf— Inflores- 

 cence — Spikelet and Flower — Pollination — Mature Grain — 



Varieties — Origin 211-213 



Panicum miliaceum (Proso, Hog or Broom-corn Millet) — 

 Stem — ^Leaf — Inflorescence — Spikelet and Flower — Pollina- 

 tion — Mature Grain — Varieties — Origin 213-216 



Chaetochloa italica (Foxtail Millets) — Steam — ^Leaf —Inflores- 

 cence — Spikelets and Flower — Pollination — Mature Grain- 

 Types and Varieties of Foxtail Millet — Key to Principal Types of 

 Foxtail Millets (Chaetochloa italica) — Origin of Foxtail Millet. 216-219 



