PRELIMINARY LIST OF TPIE PARASITIC FUNGI OF FAYETTE 
COUNTY, IOWA. 
‘ BY GUY WEST WILSON. 
That northeastern Iowa is a rich field for the mycologist is well known 
to those in any degree acquainted with the work of Prof. Holway while 
a resident of Decorah. Prom this region came numerous new species 
and here was gathered much information concerning others already . 
known. While from its nearness to Decorah the region about Fayette 
cannot offer such facilities for pioneer work as did Decorah, yet it is a 
^ most excellent base from which to study the mycological flora of this 
section of Iowa. Lying as it does on the borderland between the Tran- 
sitional and Upper Austral zones and midway between the plains of the 
west and the forests of the east this section of the state is a strategic 
point, so to speak. It was, therefore, with no small pleasure that I 
looked forward to my field work in this region. The results have far 
excelled my expectations. 
The region is a rolling prairie, traversed here and there by streams, 
chief of which are the Turkey and the Wapsipinnicon rivers with their 
tributaries. About four-fifths of the county is drained by the former, 
which crosses it in the northern part. The central portion of the county 
is drained by the Volga river, a tributary of the Turkey. The southern 
border and southwestern corner of the county are drained by the Wap- 
sipinnicon. These streams are skirted by more or less pronounced belts 
of timber. There is, consequently, a great diversity of the soil and shade 
factors which influence the development of the flora of the region, the 
lower as well as the higher plants. 
The gerater part of the field work was confined to the region about 
Fayette, but a short trip was made to Dover township, and a few 
species were collected near Oelwein. The time employed Avas the autumn 
of 1907, the spring and autumn of 1908, and the season of 1909. The 
present list contains all the species AAdiieh have been determined up to 
the present time, but a considerable bulk of unidentified material has also 
accnmnlated. The number of species here recorded is two hundred and 
forty-five — but twenty-three less than the total of Dr. Trelease list of 
