118 CALIFORNIA ACADEMY OF SCIENCES. 



G. macrocarpus approaches broad-leaved forms of cuneatus, 

 and especially entire-leaved forms of crasslfolias, in its foli- 

 age, but its liabit is said to be arborescent, its twigs are 

 slender, and its leaves opposite. Its fruit is very similar 

 to that of the entire-leaved crassif alius, but with prominent 

 dorsal horns. 



