The Grasses of Tennessee. 



KU 



Fig. 71. Triticum sativum, L.— Wheat. Ai^ a "head" or spike of 

 Beardless Wheat. A, a single spikelet; the two uppermost florets 

 are reduced to small sterile or empty glumes. C, empty glume 

 seen from the side. Cv, the same seen from the back. D, flowering 

 glume. E, palet. A'/, grain seen in front. K2, the same seen from 

 the back, i?, a portion of the rachis or axis of the spike. /, the 

 pistil which bears two nearly sessile, plumose stigmas. G, 

 lodiculees. A2^ a "head" or spike of Bearded Wheat. 



