454 



BOTANY. 



some of these are hardy (winter wheats), others are tender (spring 

 wheats) ; some are awned, others awnless ; in some the grains are 



FIGS. 334-9. INFLORESCENCE OF THE OAT. 



FIG. 338. 



FIG. 



Fig. 334. Spikelet. 



Fig. 335. Spikelet opened, ff. "flumes ; P, palets ; A, awn ; F, abortive flower. 



Fig, 336. Flower with upper palet. 



Fig. 337. Embryo. 



Fig. 338. Section of grain. 



Fig. 339. Diagram of spikelet.' Gl, glumes ; S, palets ; A, abortive flower. 



dark in color (red wheats), in others they are light colored (white 

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

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



