454 



BOTANY. 



Bome of these are liardy (winter wheats), others are tender (spring 

 wheats) ; some are awned, others awnles-s ; in some the grains are 



Figs. 334-9.— Inplobbsobnob op the Oat. 



Pia. 337. 



Fis. 338. 



Fig. 339. 



Fig. a34.— Spikelet. 



Fig. 335.— Spikelet opened. G. glnmes ; P, palets ; -4, awn ; F, abortive flower. 



Fig, 336. —Flower wiili upper palet. 



Fig. 887.— Embryo. 



Fig. 338.— Section of grain. 



Fig. 339. — Diagram of spikelet. Gl, glumes ; .B, palets ; A^ abortive flower. 



dark in color (red wheats), in otlie:s they are light col.>red (wliite 

 wheats). Fahre's experiments about a quarter of a century ago appear 

 to indicate that wheat was originally derived from a wild grass called 



