274 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



EXPLANATION OF PLATE XII 



Photographed by R. E. Shuey 



Opuntia galapageia Hensl., specimen of a branch from Charles Island. 

 X -38. This specimen contains both stiff and capillary spines in the 

 fascicles, in which respect it is intermediate between O. galapageia and 

 O. myriacantha. 



