154 IOWA ACADEMY OF SCIENCES. 



GEBANIACEAE. 



Geranium niaculatum L. 

 Oxalis violacea L. 

 O. stricta L. 



RCTTACEAE. 



Xantlwxyhim americanum Mill. Not common. Found on steep 

 bluffs along the course of middle river. 



CELASTRACEAE. 



Celastrus scandens L. 



VITACEAE. 



Vitis riparia Michx. 



Ampelopsis quinquefolia Mx. Common in timber. 



SAPINDACEAE. 



Aesculus glabra Willd. 

 Acer dasycarpiini Ehrb. 

 Negundo aceroides Moench. 



ANACAKDIACEAE. 



Rhus glabra L. 



R. toxicodendron L. Rare, in dense timber. 



l.EGUMINOSAE. 



Baptisia leticantha T. & G. 



B. leucophea Nutt 



Lupinus perennis L. Probably fugitive from gardens. 



Tri folium pratense L . 



T. repens L. 



T. hybridum L. 



Melilotus alba Lam. Quite common, only in the western half 

 ot the county, where the roadsides are covered with it. 



Me die ago saliva L. 



Amorpha canescens Nutt. 



Petalostemon violaceus Michx. 



P.candidus Michx. 



Tephrosia virginiana Pers. 



Astragalus caryocarpus Ker. 



A. cooperi Gray. Not common. 



Desmodimn acuminatum DC. Common on Middle river near 

 northern boundary of county. 



D. rigid tim D. C. 



Lespedeza capitata Michx. 



Amphicarpaea monoica Nutt. Tolerably common in woods. 



Cassia chatnaecrisia L. Very abundant. 



Gleditschia triacanthos L. Rare. 



ROSACEAE. 



Prunus Americana Marsh. 

 P. serotina Ehrh. 



