FOREST TREES OF THE PACIFIC SLOPE. 

 CERCIDIUM. 



375 



Cercidium forms a small group of low, shrubby, thorny, green-barked 

 trees, somewhat similar in habits and form to the Parkinsonias, with which our 



Fio. i~fl. — Cercidium torreyanum. 



three southwestern species were once, and by some authorities still are. com- 

 bined. The 2-forked leaf-stems, with few pairs of very small leaflets, and 



