78 



Bulletin V. 2. 



Fig. 32. Fig. 33. 



Fig. 32. Euchlcena luxurians. — Teosinte. The uppermost cut in 

 the figure shows the staminate or male inflorescence reduced one- 

 half; to the right below is shown the female inflorescence mostly 

 concealed within the sheathing leaf; to the left below is shown a 

 single female or pistillate spike. R, a joint of the rachis of the 

 female spike. St^ terminal portion of the stigma. 



Fig. Zl' Tripsacum dactyloides L. — Gama-grass. A^ a portion of 

 the inflorescence, which is a spike, pistillate spikelets below, 

 staminate above. R, a joint of the rachis of the pistillate portion 

 in vertical section. Above this is illustrated one of the pistillate 

 spikelets, and at the top of the figure is shown one of the two- 

 flowered staminate spikelets. 



