QUEKCUS. 



211 



6, young branchlet of Q. alba, with aments, &c. 2, a staminate ( 3 ) flower ; 3, the 

 same ; 4, a pistillate ( ? ) flower with 5 stigmas ; 5, vertical section of the same ; 6, 

 branchlet with full-grown leaves and mature fruit ; 7, section of the the acorn show- 

 ing the two thick cotyledons and embryo at top ; 8, acorns of Q. robur. 



