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ON THE GEOLOGY AND NATURAL HISTORY 
Negundo aceroides , Moench. One of the few trees which extend to the mountains. 
POLYGALACEiE. 
Polygala alba , Nutt. On sterile hills to Fort Union. 
Poly gala verticillata , Linn. Moist places on prairies, Fort Pierre, Bad Lands. 
Polygala senega , Linn. Council bluffs. 
LEGUMIN OSiE. 
Vicia Americana, Muhl. Upper Missouri generally. 
Lathyrus linearis , Nutt. Upper Missouri generally. 
Latliyrus polymorphic, Nutt. White river valley. 
Lathyrus venosus , Muhl. Rich bottoms, Big Sioux. 
Phaseolus pauciflorus, Benth. Ball Lands. 
Amphicarpcea monoiea , Nutt. White river valley, Fort Clark. 
Apios tuberosa, Moench. Along sandy woody bottoms of Missouri. A species of 
mouse gathers large numbers of the tubers of this plant for his winter store. 
These “ caches” (as they are called) are eagerly sought by the squaws, and the 
tubers taken and used as food. I have seen several bushels of the roots in a 
single lodge. Cooked with buffalo meat they make a very palatable dish. 
Glycyrrhiza lepidota , Nutt. Diffused generally. 
Psorcdea lanceolcita, Pursh. From Bellevue to Yellowstone. 
Psoralea fioribunda , Nutt. Big Sioux river to Bad Lands. 
Psoralea campestris, Nutt. Bad Lands. 
Psoralea argophylla , Pursh. A most beautiful plant, covering the plains as with sil¬ 
very velvet. Big Sioux to mountains. 
Psoralea cuspidata, Pursh. Fort Pierre to Bad Lands. 
Psoralea esculenta , Pursh. Affords the Indians a very nourishing farinaceous root, 
upon which they subsist almost entirely in the spring and early summer months, 
when game is scarce. It is also a great favorite of the grizzly bear. 
Psorcdea digitata, Nutt. Sand hills on Loup fork. 
Amorpha fruticosa, Linn. A common shrub, above Missouri to mountains. 
Amorpha canescens, Nutt. Very abundant on the upland prairies, Loup fork, and 
Niobrara river. 
Amorpha nana , Nutt. Fort Laramie and high up the Missouri. 
Dalea aurea , Nutt. Bad Lands. 
Dcdea alopecuroides , Wi'lld. Big Sioux river. 
Dcdea laxiflora , Pursh. Fort Pierre to the Yellowstone. 
Petalostemum candidum , Mich. Big Sioux river. 
Petalostemum multiflorum , Nutt. Fort Pierre to Bad Lands. 
