sphagnous bogs of northern Indiana and adjacent Illinois and Michigan 
along with other coastal plain plants. I have not yet settled in my 
mind whether they are two distinct species or not but their ranges 
are striking. I am therefore particularly anxious to know whether the 
Connecticut Valley plant is the coastal plain thing or the prairie plant. 
Incidentally, the outer involucre of Mr. Clark’s material strongly sug¬ 
gests either aristosa or B. involucrata , both of which we get as ad- 
ventive plants, although B. involucrata is known as an indigenous species 
in the marshes of Delaware and might possibly be indigenous with us. 
If some time you can get hold of' some of this material for 
checking I whould be extremely glad to see it, although I am not yet 
prepared without further field study to pronounce very finally upon 
the things. 
Hoping to see you soon, with kind regards to Mrs. Weatherby, 
Sincerely yours, 
pictated to HMB. 
