IOWA ACADEMY OF SCIENCES. 
181 
Anacardiac^. 
Rhus glabra L. Clarke, Union, Adams, Montgomery, Potta- 
wattamie, Kinggold, Taylor, Page, and Fremont counties; 
thickets; common. 
R. taxicodendron L. Clarke, Adams, Montgomery, Potta 
wattamie, Ringgold, Page, and Fremont counties; thickets and 
waysides; frequent. R. radicans L. of the new nomenclature. 
POLYGALACE^. 
Poly gala senega L. Ringgold and Taylor counties; prairies; 
common. 
P. verticillata L. Decatur and Fremont counties; dry soil; 
frequent. The variety, ambigua Gray, of our preceding 
papers, belongs here. 
Leguminos^. 
Baptlsia leucophcea Nutt. Clarke, Union, Adams, and Ring- 
gold counties. Prairies; frequent. 
B. leucantha T. & G. Adams, Clarke, Union, Ringgold, Pot- 
tawattamie, and Taylor counties. Prairies; common. 
Grotalaria sagittalis L. Fremont county. A few specimens 
found. Very common in dry, open, upland woods, Otoe county, 
Nebraska. 
Tri folium pratense L. Clarke, Union, Adams, Montgomery, 
Pottawattamie, Ringgold, and Fremont counties. Waysides; 
common. 
T. rejlexum L. Union county. One specimen found on river 
bank. 
T. repens L. Clarke, Union, and Pottawattamie counties. 
Waysides; common. 
T. hybridwm L. Adams county. Waste places; infrequent. 
Melilotus officinalis Willd. Fremont county. Waste places; 
frequent. 
M. alba Lam. Clarke, Union, Adams, Pottawattamie, Mont- 
gomery, Taylor, and Fremont counties. Waysides; common. 
Medicago saliva L. . Fremont county. Waste places; infre- 
quent. 
Psoralea tenuifora Pursh. Union and Ringgold counties. 
Prairies; frequent. 
P. argophylla Pursh. Clarke, Union, Adams, Montgomery, 
Pottawattamie, Taylor, and Page counties. Prairies; common. 
P, esGulenta Pursh. Fremont county. Loess hills, probably 
frequent. 
