MICROSCOPIC STRUCTURE OF WEED SEEDS 



507 



FiQ. 384. Green Foxtail (Setarip, viridis). I, spikelet with ripe fruit, g', lower 



empty glume; g^, upper empty glume; gP-, glume, and pS, palet of- the 



staminate flower ; gf^ glume, and p', palet of fertile flower ; c, caryopsis ; h, 



bristles. II and III. caryopsis enclosed by flowering glume and palet. X 8. 



(After Winton, Conn. Agr. Exp. Sta.) 



elongated cells, pairs- of sliiDrt cells, one isodiametric, probably a 

 hair-sear, the other more or less' crescent-shaped, occur here and 

 there, and less frequently stomata and thin-walled one to three- 

 jointed hairs. 2. Mesophgl. Only about the nerves and the basal 



Pig. 385A Pig. 385B 



Fig. 385. Green Foxtail. A; Outer epidermis of the staminate flower; I, at 



the edge ; II, in the middle. X 300. 

 B. Outer epidermis of the glume of the fertile flower, showing the wrinkled 



central portion and the smooth edge. 



(After Winton, Conn. Agr. Exp. Sta.) 



