PLANTS OF IOWA 183 



Amorpha, L. 



2359. A. fruticosa, L. False Indigo. 

 Common in prairie and open woods. 



2360. A. nana, Nutt. Fragrant False Indigo. 

 Frequent on prairies. 



2361. A. eanescens, Pnrsh. Shoe-strings. 

 Common on prairies. 



Parosela, Cav. 



2362. P. enneandra, (Nutt.) Britton. Slender Parosela. 

 Not common. 



2363. P. dalca, (L.) Britton. Pink Parosela. 

 On prairies; infrequent. 



Kuhxistera, Lam. 



2364. K. candida, (Willd.) Kuntze. White Prairie-Clover. 

 Common on prairies and dry ridges. 



2365. K. purpurea, (Vent.) MacM. Purple Prairie-clover. 

 Common on prairies and dry ridges. 



2366. A', ienuifolia, (A. Gray) Kuntze. Silky Prairie-clover. 

 On dry soil, infrequent. 



2367. A", foliosa, (A. Gray) Kuntze. Leafy Prairie-clover. 

 Along streams. 



Cracca, L. 



2368. C. virginiana, L. Goat's Rue. 

 In dry soil. 



ROBINA, L. 



2369. R. pscudacacia, L. Black Locust. 

 Common, probably introduced. 



ASTRAGiU^US, L. 



2370. A. crassicarpus, Nutt. Ground Plum. 

 Common on dry prairies. 



2371. A. carolinianus, L. Milk Vetch. 



On open banks and slopes; not rare. 



2372. A. loliflorus, Hook. Low Milk Vetch. 

 Not common. 



2373. A. distortus, T. & G. Bent Milk Vetch 

 Common on dry soil. 



