468 Hope Street. 
Providence, R*I. 
February 5, 1919, 
Mrs, Horace 0, ..hmham 
206 Windsor Hoad, 
Wabaa, Mass. 
Dear Mrs, Dunham;~ 
I have your letter of Pebruary E with the 
enclosed letter from Mrs. Britton. X am returning the latter 
herewith, Thank you for lotting me see it. Possibl y Mrs. B. 
has reported to you on someone elsos mosses thinking they were 
yours, through a mixing of the packages. I made leaf sections 
of all your numbers and found them almost identical-except 
for some variation in number of lamellae and height of lamellaor 
They all had inflected leaf margins and the end cells were 
pyriform, as In P. juniperinum . As you know neither of those 
characters are found in k, alpinum . At present I should not 
-e to make a sworn statement that none of them is not at least 
varying towards P. hyperborean , nor indeed that none is that 
species I must admit that my conception of the distinguishing 
characters of the latter species is not entirely clear. Perhaps 
some day I shall undoretns.d it better. 
Sincerely, 
