418 



BOTANY 



FIG. 399. Carpinus Caroliniana. Pistillate catkin. (After BAILEY.) 



cup 



FIG. 400. Querciis agrifolla. A, twig with male, $, and female, 9, flowers. 

 B, single male flower, enlarged. C, female flower, enlarged. D, section of 

 older flower; cup, cupule. E, ripe acorn: cup, cupule. 



