STUDIES IN THE NORTH AMERICAN OPUNTIA 



C. Z. Nelson_, Galesbueg. 



Ill the years of 1S91 and 1892 while a stiideiit in Denver, 

 Colo., the wi-iter became closely associated with Prof. F. 

 E. Scanlon and Dr. J. F. Saler. Prof. Scanlon was an 

 assarer and mine expert of high standing while Dr. Saler 

 was a physician and chemist. Both of them were also 

 good botanists. During the summers of 1891 to 1895 we 

 visited and camped in several localities in Colorado, Ari- 

 zona and New Mexico. In 1896 I returned to Illinois, 

 maintaining regular correspondence with my former 

 chums. 



In 1900 both of them made itineries into Mexico in the 

 interest of different mining concerns and in their travels 

 collected much botanical material which was sent to me to 

 care for and to identify. 



Unfortunately the activity of my friends was of short 

 duration. Mr. Scanlon succumbing to some form of fever 

 in the State of Oaxaco, April 3, 1902, and Saler was last 

 heard from in Cerco Blanco, Chile, June 9, 1903. 



Among other important correspondents the writer has 

 been much aided with material and data by Prof. Mackeu- 

 sen, San Antonia, Texas; Dr. Forrest Shreve, Tucson, 

 Arizona; Jesus Gonzales, Paras, Mexico; J. E. Brown, 

 Sanborn, Kans. ; B. R. Russell, San Saba, Texas; L.B. 

 Childs, Boerne, Texas, and Pacific Grove, Calif.; F. H. 

 Young, Haines City, Fla. ; Ella Huber, Ybor City, Fla., 

 and scores of others. From the plants received the follow- 

 ing new species have been described and published in the 

 Galesburg Republican Register, July 20, 1915 : 



Opuntia youuiji, sp nov. 



Type loc : nine miles northeast of Tampa, Fla. 



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