78 AMERICAN MIDLAND NATURALIST 
specimens, male and female. They seem hardly referable to 
the species. Several points of divergence are manifest. They 
are stout and low, and the two sexes of about the same height, 
the male 234, the female 314 inches. Both are at the same stage 
of development as to flowers. The involucres are larger, and those 
of the female are not darkened at all as to the lower part of the 
scales. The pappus of the male is quite like that of Mr. McDonald’s 
Peoria plant; yet in other particulars that and this are rather 
dissimilar. At Dodgeville, 20 June, 1898, I collected what is prob- 
ably quite typical western A. neglecta, the stems slender, 9 or Io 
inches high, the heads racemose, their scales dark as usual. 
Gilbert Random, Oshkosh, 4 May, 1896, reports “sterile 
knolls”” as the habitat, and the two plants, female, are for the 
West typical. 
Iowa. Mr. C. R. Ball collected at Ames, 18 May, 1897, and 
at Marshalltown, 15 May, 1897, good plants male and female of 
the most hoary state of the species, the soil and environment not 
being mentioned. 
R. E. Buchanan gives “Open prairie” as the habitat of 
specimens made by him, 10 May, at Ontario in the State, 1902. 
They are quite like those of Mr. Ball. 
3. A. Wilsonii. Habitu et mensura A. neglectae, sed folia et 
breviora et latiora, tomento faciei superioris vix deciduo. Capitula 
majuscula, interdum distincte subracemosa, plantae femineae 
involucri squamis omnibus angustis, summitate angustissime 
scariosis, maris squamis obtusissime obovatis, summitate inaequal- 
iter dentatis. Pappus maris apice paullulum incrassatus et obscure 
sub lente crenatus. 
Collected “Near Cold Creek, Hamilton Co.,” Indiana, 18 
April, 1892, by Guy Wilson; specimens in my own herbarium 
and in that of U. S. Museum. In several of the male specimens 
the heads are loosely racemose, a thing never seen in A. neglecta, 
or in any other species whatever. The short broad leaves, from 
which the woolly indument is seldom wholly deciduous, and the 
peculiarities of the involucre in both sexes, compel the recognition 
of this plant as a species. It is from central Indiana, and the 
collector remarks that it is rare. 
4. A. erosa. E grege A. neglectae, sed folia majora, submem- 
branacea, apice obtusissima, infra medium abrupte angustata. 
Capitula. utriusque sexus pauca, in summo, caule confertim sub- 
