PLATE XXII 



Menziesia ferruginea (41a, 41b, and 41c*) 



Vessels present; growth ring initiated by a single row of large, 

 closely spaced vessels; vessels solitary, in pairs, or in vari- 

 ous aggregates; perforation plate scalariform; rays uniseriate 

 only. 



Vaccinium membranaceum (42a and 42b) 



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

 gregates; perforation plate scalariform; rays one to several 

 cells wide. 



