174 IOWA ACADEMY OF SCIENCES. 



we passed northward through Otoe county and stopped in Cass 

 county, Neb., opposite McPaul, Iowa. Here two weeks were 

 spent drying material and collecting on the Nebraska side of 

 the river or on the Iowa side around McPaul. Wabonsie 

 slough, which is mostly the remains of a lake about two miles 

 north of McPaul, gave us many good specimens. 



On August 25th we started from Nebraska City on our 

 return. The route chosen was northwesterly across the valley 

 and through the hills to Sidney in Fremont county, thence 

 eastward to Clarinda, Page county; on across Taylor county to 

 Mt. Ayr, in Ringgold county, the road scarcely varying a 

 mile north or south from a due east and west line, the entire 

 distance from Sidney to Mt. Ayr. From Mt. Ayr we turned 

 southerly, toward Lamoni, arriving. on the 18th of August. 



The following list of species is the result of the trips here 

 described and the additional species found in Decatur county 

 since our last paper was written. The specimens are deposited 

 in the private herbarium of T. J. and M. F. L. Fitzpatrick. 

 The list is by no means complete but represents very well the 

 flora of the region for the period of time covered. The order 

 Leguminoste is fairly well represented, midsummer being the 

 time of its greatest development, while the great order Com- 

 positse has only fairly started by the latter part of August. 

 The spring flora had passed out by the time we began work. 



The rectangle formed by the six counties, Union, Adams, 

 Montgomery, Ringgold, Taylor and Page, presents much 

 in common. A great portion of this region is an expanse 

 of rolling prairie. Level ground is rarely seen save in the 

 narrow bottoms or highest uplands. The ground near the 

 streams rolls heavily, but gradually reduces to long swells as 

 we go farther from the streams. Much of the land appears as 

 long narrow ridges running parallel with the streams and 

 flanked at sharp intervals with small lateral ones. The ridges 

 are of the typical Kansas drift, covered with a thin black or 

 blackish soil, while the valleys are alluvium, deposited from 

 overflows of the streams or carried down from the uplands by 

 surface wash. 



Grand river and its tributaries cross diagonally the east- 

 ern portion of Union county, rolling southeasterly; Ringgold 

 county is drained by the west fork of the Grand and Platte 

 rivers, and their tributaries, rolling southwesterly. The 

 southeastern portion of Union county is drained by the same 



