SMITHSONIAN INSTITUTION 



UNITED STATES NATIONAL MUSEUM 



WASHINGTON, D. C. 



January 16, 1925 . 



Mr. Walter Deane, 



29 Brewster Street, 



Cambridge, Massachusetts . 



My dear Mr . Deane : 



Your card of January 12th came duly to hand, hut 

 your hox of cactus specimens mentioned therein did not 

 reach me until yesterday. These I have identified as 

 follows. The little slender specimen is undoubtedly a 

 seedling of Opuntia versicolor. It ought to have small 

 leaves subtending the spine clusters. I think I can ob- \ 

 serve the small leaf scars in your specimens. The round 

 specimen with hooked spine is what has long passed as 

 Ma mmill aria £rahami, but you will find it treated in the 

 fourth volume of my cactus monograph as ITeomam mi liar ia 

 miorocarpa . Figure 174 resembles very much your speci~ 

 men. The original plant was collected by Emory about 

 1848, and was described by Doctor Engelmann, I believe, 

 from his notes. A few years ago I had one of my col- 

 lectors go back to the very spot where Emory collected 

 his plant and send me some specimens which proved to 

 be the same as Mammillaria grahami of our collections . 



truly, 



Bose 



Associate Curator, 



Division of Plants. 



