EBegelmaier Tübingern Dec. 19,1868 



Ree. Jan 9 This coulä be 186? ? E.D.. 



Ans. Feb.2 



4ft**tEcna-red Bbctor t 



The present letter serves primarly to let you not any lon- 

 ger in doubt about the fate of the friendly and valuable shipnent irr 

 alcohol. It reached nie 3 - ^ weeks back from Frankfurt , and H pronouce 

 nry most devoted thajiks to you. . 



All arrived in good shape; opened and examined until now are 

 only the little glasses with the mixture of Lemnae and Wolf f ia cplum^ 

 blana from St. Louis. To the others I will get only in the New Year, 

 because T like to get into an object thoroughly once I get to it'.. 



I am therefor not in position, to make many remarks about the 

 items.thus only this, that the questionable Lemnae - in that respect 

 I have become f inally^conf irmed - are certainly identical with our 

 europaean minor . We have equally robust and still more robust forms.. 

 The carina in the middle line of the Upper surface has also the eu- 

 ropaean minor . The carina on yours was at first view somewhat dumb- 

 founding In the size of the epidernis cell s ( and a related' measure of 

 thel related size of the stomata, there is no difference from our nor- 

 mal europaean forms. One can however not use this last point as a 

 diggnostic characteristic, as I thought for some time. I have now 

 slowly made a lot of measurments on a mass of forms.and, from this 

 results indeed^that (what become s fast apparent)L. minor has gene - 

 rally smaller stomata than other species, specially the perpusllla , 

 grorip, however, there are remarfcable exceptions from both sides f so 

 that in the extremes of both sides the dimensions overlap/. Even 

 less could L. perpusilla and our maculosa resp. - paucirostata be 

 separated on the basis ofl only vegetative characteristics. . . 



D. minor and perpusilla are certainly in their mutual relatiorc 

 so different, that they are, what one calls ♦•good species** ; every 

 sytematician, who examines them caref ully, will declare for this.- 



