THE GENERAL CHARACTERS OP SEEDS 



411 



Figure 242A 



Figure 2i2B 



a, b, c, 



Figure 242C 

 various views of 



Fig. 242. A. Switch- Grass (.Panicum virffatum') 

 splkelet ; d', "seeds," natural size. 



B. A single splkelet. . ;. 



C. lillUet ^Pantcum miliaceurh'i . 



(A, after HlUman, Bull. Mich. Agr. Exp. Sta. ; B and C, ' drawings by ' Char- 

 lotte ^BJ. King.) - - 



Millet {Panicum miiiaceum h,) . ■* 



Spikelets acuminate, one-eighth to one-fifth in. long, lower 

 gluine acuminate, 5-7-nerved ; third glume subtending the empty 

 palet, 7-13-nerved ; flowering glume indurated, obtuse, shining, min- 

 utely cross-striated; the hulled seeds ovoid, yellowish. Found in 

 clover and alfalfa seed. ^ . ," * - 



"' Barnyard Grass {Echinochloa cfusgalli (L.) Beauv.). 



Spikelets with hispid or piibeseent nerves; first glume shorter 

 than the third, awned; second awnless or short-awned; third with 

 long rigid awn ; flowering glume generally ovate ; one-tenth to one- 

 ninth iji. longitudinally striate; palet smooth. Not infrequently 

 found in clovers. 



Fig. 



243. A. Barnyard (Jrass (Echinochloa crusgalU). A, a floret, back view 

 of the glume. B, front view of floret, showing the palea. C, edge view of 

 the same. D, the stlkelet, showing the small first glume, the awned third 

 glume, and the _ tip of the second. E, a group showing the natural size of 

 the preceding. 



