CLASSIFICATIOxM OF AxXGIOSPERMS. 47] 



Fig. 257. Carex lurida, one of the Sedge family {CyPeracea), found throughout the 

 summer in swamps and wet meadows in the eastern and central United States. It is a 

 perennial grass-like herb with triangular culms, 3-ranked leaves, and with 2 to 4 spikes of 

 flowers. The genus is a vast one of more than a thousand species, widely distributed and 

 most abundant in the temperate zones. — After Troth. 



ble those of pop-corn, but the starch grains in the other cells are 

 more or less rounded or slightly polygonal, and vary from 5 to 25 /i 

 in diameter; the central rarefied area is either wanting or usually 

 not more than 2 /x in diameter. 



(3) Zea Mays saccJiarata yields the sugar corns. While the 



