ISO 



MEMOIRS FKOM THE DEPARTMENT OF BOTANY OF COLUMBIA COLLEGE. 



EXPLANATION OF THE PLATES ON THE ANATOMY. 



o Pith. 



n \A'ood-parenchyma. 



Ill Double Spiral \^essels. 



1 

 k 



P 

 h 



g 

 f 



V 



c 



d 



b 

 a 



Annular and Spiral ^^e8sel: 



Spiral \^essels. 



Annular \'essels. 



Sealariform \'essels. 



Border-pitted \''essels. 



Traclieidu.s. 



Woody Fibres. 



Phloem. 



Stereome Cylinder or Fascicles 



Klxternal Stereome Fascicles. 



Starch-ring. 



Hypodernia. 



Epidermis, 



Xylem. 



Collateral Bundle. 



Plerome Derivative. 



> Primary Cortex. 



Periblem Derivative. 



Dermatogen Derivative. 



