Postmark M ay 15»l865 

 date at end of letter-r 



May 1,186.5 



Most honored Sir ! 



Your letter,rich in interesting notes t ,of January 31 of this 

 year with its valuable enclosures, Ii ieft long without reply^which 

 V ask ask you kindly to excuse on account of all kinds of circum - 

 stances; Various jobs, several kinds of sickness,and a very deman - 

 ding teaching activityy which did not permit me to get to physiolo- 

 gical studies. Now, that I have examined again some,! 1 am better pre- 

 pared to give a satisfactory reply 1 to some of your presented ques - 

 tions,than it would have been possible earlier. Also, . I am now able,, 

 to present to you an equally rieh assortment of samples, at least 

 enclose something to present to you, which should not be without in- 

 terest to you.Of the exotic Callitriche I have as good as nothing 

 except yours t , though I have seen much in collections.. Should you be 

 able to improve this condition in the future, I may be able to as - 

 sist you with details.. 



But, now, to the specific items.l That my ^J?fylMWW& , _ 

 C peploldes Nute I convinced myself already earlier from a sample 

 sent by Prof. Braun. I thank you for the speeimen of this rare Spe- 

 eles. It will interest you, that I prot aquainted this spring with 2 

 more oustanding species* with near frults, from New Hol- 



land (the name given at that time to the Söuth-eastern part of Au- 

 stralla,E.D. ) , C . p ranlf ora and C . vmbraota var.C. peploides .very 

 well diff erentiated from each other; I may describe them in due time 

 and, if possible, lllustrate them. May-be there exist also in Ame- 

 rica species with these peculiari ties ? r If the species, which seems 

 characteristic with round fruit s for North America, will get the 

 name C. Asae° Greyi or one of the three names of Pursch, which seems 

 the first-named one, is of course of no consequence to me. After 

 all; our nomenclature is, so to say, only a necessary evil 



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