San Antonio, October 6 



Dr. G. Engelmann, St. Louis, 



You will have received my letter of May 28, and unfortunately waited fruit- 

 lessly for the promised dried branches. However I have been sick constantly from 

 June until the previous month and ailing, and could not concern myself with such things 

 and, even less, myself do something. 



Today I am sending 3 branches to you, No. 1 srrows here insi.de the city on the 

 moist and irrigation canals, and climbs to the tops of the highest trees and carries 

 a loose, small-berried, dark blue grape, No. ? and 3 are from two different vines of 

 which the one N # 2 grows in bottom land, but not in the thick overgrowth of the larerer 

 streams, but in the open creeks which are dry for periods of 1/3 to 1/2 of the year. 

 N. 3 grows on the open prairie, near the wooded heights. I, as it is also gene rally 

 here, consider both as the same kind and only because of the difference in location 

 grow more or less luxuriantly. It is the one according to Plantae Lindheimerii which 

 I designated as Vitis aestivalis . It has a tightly closed and blue grape, with small 

 berries and, when fully ripe, of good taste. Of the mountain grape which I mentioned, 

 I have not been able to receive a branch, in spite of various letters to several of 

 my acquaintances, their nearest location of which I know, is 60 miles from here at 

 the sources of the Medina and. further northward. 



I have enclosed a leaf of the Opuntia rufida, a flower of it I have not yet 

 seen. Some time ago I also received Cereus Greggii and Mamillaria fissurata *nd also 

 some other Cereus whose names I am not yet familiär ^ith, they ^pvenr to me to be 

 brenoides , Dasyacanthus and the one perhaps ^oranthus, and think I will receive more 

 in the course of the Winter. 



Again asking your indulgence for the long delay and homncr that my health will 

 not again place a hindrance in the way, I am, 

 Sincerely, 



Otto Ludwig 



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