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Wilmington, 
September 22, 1893.

Dear Dr. Sandberg. 

I return Holzinger's list, the only specimens I have here to compare are the following. The others I presume were returned to you so that I cannot tell whether he or I is right in the cases when we disagree. But of these now mentioned I am well satisfied. 539 he calls "Spiraea betulifolia, Pall but in inflore, approaching S.Salisfolia," That is just the reason Greene made it his S. pyramidalis. 

158 "PotentillaNorvegica" - my specimen is as I named it, P. rivalis, Nutt. var. millegrana, Engel. 
745 "Alliun attendfolium, Kellog" - my specimen is good A. cernmum nodding flowers - my bulb from a rhizome and all the rest. 
355 "A. Stellatum, Nutt." - The specimens here correspond exactly with the specimens of A. serratum, Watson [[underlined]] named by him. [[/underlined]]
 
I re-inclose his list. 

I have had much pleasure in going over the present sending in which I already find some things of much interest although these determinations are only tenative. Here is the list so far.