SPALDING 
PEATE 6 

> 
eine ae 
Single individual of Cercidium torreyanum. Branching opuntias in background. 


a 
i 
a 
pete SO BR Or 0, 
* ee We , 
Tame eS ytd 
AO eekis 
Ephedra trifurca in wash west of Desert Laboratory. 
CAMPBELL ART CO., ELIZABETH, N. J. 
