STATE GEOLOGIST. 43 



P. caurtidiis, Micbx. 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, Upham. 



P. villOfsUS, Niitt. Silky Prairie Clover. 



Common on sandy land, from lake Pepin, MissMannhtu, Goodhue county, Sandhcrg, 

 and the barrens of the St. Croix river, I'arry, to Minneapolis, Lac qui Parle, and Polk 

 county, Uiiham. 



A3IOKPHA, L. False Indigo. 



A. Iriitioosa, L. False Indieo. " River Locust." 



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

 to the upper Mississippi river, (ranifori. 



A. cauescen.s, Nntt. Lead- Plant. "Shoe-strings." 



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

 tough roots, which are troublesome in plowing. 



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



Common from the Blue Earth river, Pani/, and Chippewa. Swift and Grant counties, 

 i?o?jcrfs, southwestward ; also common, or frequent, throughout the Red river valley, 

 Upham. 



ROBIXIA, L. Locust-tree. 



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

 Adventive, Minneapolis, WinchcU. 



TEPHROSIA, Pers. Ho.\ry Pea. 



T. Virgiiiiana, Pers. Goat's Piue. Catgut. 



Lapham. Hart, Winona county, Winchdl; at head of lake Pepin, Sandherg, 

 Washington county, Juiti. South . 



ASTRAGALUS, L. Milk-Vetch. . 



A. caryocarpiLS, Ker. Ground Plum. 



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

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

 have reached the size of hazel-nuts, iliey 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. Temies.seensis, Gray. Ground Plum. 

 Grant county, Rol>crts; Fergus Falls, Leonard. Southwest. 



A. <3anadeiisis, L. Milk- Vetch. 



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

 Upham. 



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

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



teeth all very acuminate ; legumes 1 -seeded From 1 to 2 feet high ; flowers 



purple and fragrant. A very elegant little shrub. Purah's Ft. Ami r., quoted hy Ar- 

 thur (Contritnitiom to thr Flora uf Iowa, jS'o. V.), who adds : " This compact little shrub 

 is abundant on the dry prairies of northwestern Iowa. It flawers in iMay, and not in 

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

 and in 10— 20 pairs." 



