STATE GEOLOGIST. 43 



P. Candidas, Michx. White Prairie Clover. 



Abundant, with same range as the last ; excepting that it is less common in the 

 north part of the Red river valley, Uphatn. 



P. villosus, Nutt. Silky Prairie Clover. 



Common on sandy land, from lake Pepin, Mis.s Manning, Goodhue county, Sandficnj, 

 and the barrens of the St. Croix river, l-'arnj, to Minneapolis, Lac qui Parle, ana Polk 

 county, TJpham. 



AMORPHA, L. False Indi&o. 



A. fruticosa, L. False Indigo. " River Locust." 



Common through the south half of the state, in the Red river valley, Upliam, and 

 to the upper Mississippi river. Garrison. 



A. canescens, Nutt. Lead- Plant. "Shoe-strings." 



Abundant, with the same range as the last. The common name alludes to its long 

 tough roots, which are troublesome in plowing. 



A. niicropliylla, Pursh.* (A. nana, Nutt.) Dwarf False Indigo. 



Common from the BlueEarthriver,Par)i/, and Chippewa. Swift and Grant counties, 

 JRo7jerte, southwestward ; also common, or frequent, throughout the Red river valley, 

 Upliam. 



ROBINIA, L. Locust-tree. 



R. Pseudacacia, L. Common Locust-tree. False Acacia. 

 Adventive, Minneapolis, Wineliell. 



TEPHROSIA, Pers. Hoary Pea. 



T. Virg-iniana, Pers. Goat's Rue. Catgut. 



Lapham. Hait, Winona county, Winchcll; at head of lake Pepin, Sandherg, 

 Washington county, Juni. South . 



ASTRAGALUS, L. Milk- Vetch. 



A, caryocarpus, Ker. Ground Plum. 



Common, often abundant in all the prairie portion of the state ; extending north- 

 east to the upper Mississippi river, Garrison. " When tbe pods, which are nearly solid, 

 have reached the size of hazel-nuts, they prove a valuable addition to the list of early 

 vegetables. Cooked like green peas, they make a pleasing dish, intermediate in taste 

 and flavor between early peas and asparagus." Arthur. 



A. Plattensis, Nutt., var. TeiMie.sseensis, Gray. Ground Plum. 

 Grant county, Rohertu; Fergus Falls, Leonard. Southwest. 



A. Oanadeusis, L. Milk- Vetch. 



Common, or frequent, throughout the state ; abundant in the Red river valley, 

 Upham. 



*Amorpha microphtlla, Pursh. Nearly smooth, dwarf ; leaves with very short 

 petioles, obtuse at both ends ; spikes short, solitary ; calyx nearly naked, pedicellate, 



teeth all very acuminate ; legumes l-seeded From l to 2 feet high ; flowers 



purple and fragrant. A very elegant little shrub. Pursh's Fl. Amer., quoted by jLr- 

 thur {Contrihutions to the Flora of Iowa. No. V.), who adds : " This compact little shrub 

 is abundant on the dry prairies of northwestern Iowa. It flowers in May, and not in 

 July and August as stated by Pursh. The leaflets are oblong, conspicuously punctate, 

 and in 10— 20 pairs." 



