ANTENARRIA IN THE MIDDLE WEST 87 
a woodland border, the woodland strip narrow, skirting the banks 
of the Sangamon River, in Piatt County a few miles southward 
from Monticello. The best sheet of fertile plants yet seen by me 
was that I might have named as the type which I had from H. A. 
Patterson of Oquawka as long ago as 1874. He obtained it near 
Oquawka in that year. I have never had any doubt that his 
fertile and my sterile are of one and the same species. 
Being in Monticello in May, 1909, I followed the north bank 
of the Sangamon in the direction of my original but now obsolete 
station for this species, but with the result of finding along those 
sunny bluffs plenty of fertile plants in good condition but not 
a sterile one. The next best showing of sterile A. occidentalis 
known to me is from Marshall County, a part of the same physi- 
ographic region to which the County of Piatt belongs. This 
is a sheet (U. S. Herb. n. 645268), of two specimens gathered 
by Virginius S. Chase, 19 May, 1907, from “Rich woods along 
west fork of Senachwine Creek.’’ I do not like “rich woods” 
for the habitat of my A. occidentalis, for, while it is not a prairie 
plant such as A. mesochora is, the environment of rich woods 
is not that open knolls bordering woods and where the soil is 
not rich but clayey rather. Mr. Chase seems not to have gathered 
the larger fertile plants; but as for the male pappus in these 
specimens, it is perfectly that of the present species, though the 
stems are quite slender; something that might be due to the shade 
in which they are by implication said to grow. The fertile in- 
dividuals of this plant are needed for the settlement of the question 
_ of its precise identity. Probably we have it, and from Mr. Chase, 
from another station also in Central Illinois, and gathered six 
years later than the males just mentioned. ‘The sheet that holds 
the two specimens is 434360. It is E. Nelson’s distribution 
nN. 533; is described as having grown, “On a clayey slope near 
Princeville, Peoria County.’’ That agrees well with the habitat 
of A. occidentalis at the place where I obtained first. The specimens 
match perfectly my specimens from the hills sloping to the San- 
gamon; the two localities not only belong to the same geographic 
tract, but are not more than 75 or 80 miles apart. Indeed there 
is not the least doubt that Mr. Chase’s fertile plants from Prince- 
ville are perfect A. occidentalis. But that his male plants of 
the earlier year belong here seems improbable; and nothing 
but specimens of the other sex from that rich woods station can 
help to the settlement of the question. 
