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Bulletin Wisconsin Natural History Society [Vol. 11, No. 3 
Berryville, Kenosha County); and of A. poaceus Burgess — also 
described in the Flora of the Southeastern United States — with pro- 
fuse ramification, small heads and greatly elongated narrow leaves 
(Sauk County) ; although the specimens referred to do not exactly 
meet the requirements of these descriptions. Other curious forms 
are found at High Cliff, in Calumet County. Besides the locali- 
ties already named the writer has collected A . azureus in Racine, 
Dane and Waukesha Counties. The Milwaukee Public Museum 
has specimens from Jefferson, Manitowoc and Burnett counties. 
Dr. Ogden has collected it in Waushara County. The J. H. 
Schuette collection has specimens from Brown County. Mr. 
Benke has collected it in Portage County. Other localities are 
represented in the Wisconsin University collections. The rays of 
this species are apt to turn deep blue in drying, but the writer has 
never observed them of that color in the growing plant. 
A. Shortii Lindl. 
Bluish, rose-tinted and pure white rays are found in this species. 
The writer has specimens from Kenosha, Racine, Milwaukee, Wau- 
kesha, Ozaukee, Sheboygan and Outagamie Counties. It has 
lately been collected by Mr. Benke in Manitowoc County, and 
it was collected by J. H. Schuette in Brown County — which, 
perhaps, marks the northern limit of its range. Certain peculiar 
dwarfed forms from Milwaukee County may be hybrids between 
this species and A . Drummondii. 
A. cordifolius L. 
A. Lowrieanus Porter 
Plants which entirely satisfy the descriptions of A. cordifolius 
and A. Lowrieanus are comparatively rare and form only a small 
portion of a large and widely distributed group most of whose 
members are of intermediate character and refuse to conform 
strictly to either type. For this reason it is not always easy to 
decide in which of these species the many forms which must be 
assigned to one or the other should be placed. A. Lowrieanus , 
with its gradually narrowed leaf bases, alate petioles and loose in- 
florescence, seems to be a connecting link between several of the 
different species which have been grouped together under the com- 
mon name of heterophylli. In the particulars just mentioned it 
