PLATE XXVIII 



Sambucus racemosa (52c* and 52d**) 

 (See page 60) 



Symphoricarpos albus (53a and 53b) 



Vessels present; vessels solitary, in pairs, or in various 

 aggregates; annual ring initiated by a definite band of large 

 vessels; other vessels are much smaller and sparse, giving 

 a two -banded appearance to the growth ring; perforation 

 plates simple; axial parenchyma numerous, paratracheal and 

 diffuse, often encircling the larger vessels, rays one or two 

 cells wide (rarely three) . 



