ANTENNARIA IN THE MIDDLE WEST 79 
sessilia. Squamae involucri plantae femineae latiusculae apice 
subtruncato eroso-lacerae, aut interdum fere pectinato-fimbriatae ; 
maris late obovatae, interdum retusae, leviter eroso-dentatae. 
Prairies of Marion Co., southern Illinois, collected only by 
the writer. The oldest specimens are of the year 1898, taken 
near Sandoval, 12 June, 1898. At this date in southern Illinois, 
spring is past, and nothing remains of antennarias but the fully 
formed and mature stolons with their foliage. I made specimens 
of these leafy stolons, for the foliage was clearly that of no species 
I had seen before. Then eleven years later, being again in the 
region in the beginning of May, 1909, I obtained the fine flowering 
specimens of both sexes, which answer to the diagnosis given 
above. As an ally of A. neglecta this one differs from all others 
known in this one other particular, that the male plants are dis- 
tinctly taller than the female, their average height in the spec- 
imens before me being 6% inches, that of the females 5 inches; 
also the two come into flower at the same time. The habitat of 
A. erosa is not the low and level prairie. It occupies the north- 
ward slopes slight elevations toward the woodland borders between 
Odin and Sandoval. 
5. A. longifolia. Habitu praecedentis sed folia longiora, usque 
bipollicaria et ultra, infra medium magis attenuata, perinde 
quasi subpetiolata. Capitula plantae femineae in modum A. 
neglectae subracemosa. Pappi setae maris apice vix incrassatae. 
Known only from western Missouri, from which region it 
has been distributed to herbaria by B. F. Bush and by K. Mac- 
kenzie, chiefly from within the limits of Jackson County. These 
collectors have usually sent it out with only the generic name 
on the labels, as if it had not been found identifiable with any 
published species; yet n. 12 of Mr. Bush, as distributed from 
Grain Valley, of May 7, 1899, he had labelled A. neodtoica as to 
the female plant, while the male (his n. 6) from the same place 
and of the same date, is labelled A. campestris; nor is this all which 
the labels bear. That for the female plant informs us that it 
is “common in woods,” that of the male says, “common on 
prairie.” Neither of the sexes bears anv likeness to either cam- 
pestris or neodioica. Very fair specimens of plants of both sexes 
were distributed by Mr. K. Mackenzie, in 1899, from Hickman’s 
Mills, the male from “Sandy woods,” the female from “dry 
prairies’; so that, as we should suppose, the twa sexes grow 
