observe these plant s in Mexico ? 



Since we saw each other, I have also worked on the genus Yucca 

 a^d obtained very nice results« I erolose seeds of two rare» south- 

 calif ornian Yuccas for our celleague Härtel (we have near he^e also 

 a small town of 12,000 - 1>,000 people, Belleville ! »which is fre - 

 quently called n the friendly neighbor snall city' 1 by the Germans). 

 The thin seeds are Yucca Whipple 1 , which is alreaäy in Europe, the 

 thick ones belong to my Y. brevif olia , the tree of the California 

 desert, which, I believe, is still unknown, in Europe» 



What kind of means does Mr. Härtel enploy to make old seeds ger- 

 minate, hot water, chlorine, or what ? 



We live quietly on. I reduce my practice.make trips raore often, 

 make them to observe, more literary labors, while my only son, who re- 

 turned 4 years ago from his eu.ro pae an Studie s, eame home and created 

 a strong practice already» 



Düring the war we heard several rumor s ab out you, you were made 

 prisoner, killed, a,s,o; The last happily was not so, 



One more question comes to mlnd. I see that Q-ourvtia Raf iresaull 

 is bein.fr much cultivated in Europe. It is the most common in the 

 North to New Er.pc\?md\, and in the West to the Rocky Mountains. 

 Opuntia vulgaris , as I unterstand it, reach.es all the way to New Jersey; 

 I f ound it f requently in North Carolina in Fall, and always very charac- 

 teristic. Does the cultivated vulgär! s and,, the wild-growing (aotually: 

 w gone wild") i talica always correspond. with -yi>^v the typical vulgär! s ? 



Are there botanists in Europe, who buy the dried plant s ? Local 

 plant s can be had (Missouri) very cheap; mo^e expensive^ North Cali- 

 f orn.la^)lants, of which a collection of 200 - 300 mxmbers of rare and 

 new items is being o^^ered; fine specimens. 



Your old friend G. L^^elnann 

 I became aquainted with a Professor of Natural History from San 



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