42 TWELFTH ANNUAL REPORT. 



HOSACKIA, Dougl. Hosackia. 



H. Pursliiaiia, Benth.* Hosackia. 



Gravelly shore of Swan lake, section 7, Underwood, Redwood county (leaves abaut 

 ;i inch long, very short-petioled, of three oblong acute leaflets, the lateral ones oblique 

 in their lower half), Uphain. Southwest. 



PSORALEA, L. Psoralea. 



P. teniiirtora, Parsb. (P. floribunda, Nutt.) Psora'ea. 

 Cottonwood county, Holziuger. Southwest 



P. arg'ophylla, Parsh. Silvery-leaved Psoralea . 



Abundant in all tlie prairie portion of the state; extending northeast to the upper 

 Mississippi river. Garrison, (See note in American Natnraligt, vol. xvii, p. 414. i 



P. e.sciileiita, Pnrsh. Dakota Tarnip. Pomme blanche. Pomaie de 

 Prairie. Pomme de Terre. 



Common southwestward ; extending east to the rising ground east of Red river 

 prairie, Dawson, the Roseau river, Scott, Morrison county, Uplhim, Minneapolis (rare, 

 found close east of lake Calhoun), Uriswold, Rohcrts, and Blue Earth county, Leiticnj. 

 " Pomme de, Prairie of the French voyageurs; Tipsinah oi the Sioux Indians. It oc- 

 curs over a wide range of country between the Mississippi and the Rocky Mountains, 

 and is a characteristic plant of the Coteau des Prairies. The root, frequently attaining 

 the size of a hen's egg, is of a regular, cylindric, ovoid shape, consisting of a thick, 

 leathery envelope, easily separating when fresh from its smooth internal part. The 

 latter is of a friable texture, except towards the axis, where some ligneous fibres are in- 

 termixed. When dry. It acquires a sweetish taste, and is easily pulverized, affording a 

 light, starchy flour, suitable for all the uses of the ordinary article. When growing its 

 aspect Is that of a Lupine. It selects a dry, gravelly, but not l)arren soil.*' Parry. 



The Dakota (Sioux) name of the river in western Minnesota, well known as the 

 Pomme de Terre, refers to this plant. Riggs' Dakota Dictionary, p. 171. 



DALE A, L. Dale a. 



D. alopeciiroule.s, Willd. Dalea. 



Spirit lake, Iowa, Gcyer; and doubtless in the adjoining portions of Minnesota. 

 Southwest. 



PETALO.STE3ION, Michx. Prairie Clover. 



P. violaceiis, Michx. Purple Prairie Clover. 



Abundant in all the prairie portion of the state ; extending northeast to the upper 

 Mississippi river, Hoiujhton. 



■■ Hosackia, Dougl. Calyx-teeth nearly equal. Petals free from the stamens, 

 nearly equal; standard often remote from the rest, ovate or roundish; keel curved, 

 obtuse or somewhat acutely beaked. Stamens diadelphous ; anthers uniform. 

 Pod linear, compressed or nearly terete, sessile, several-seeded, with partitions be- 

 tween the seeds. Herbaceous or rarely woody, with pinnate 2- to niany-foliolate leaves; 

 stipules mostly minute and gland-like; flowers in axillary sessile or pedunculate um- 

 bels, yellow, often becoming brownish. 



Hosackia Purshiana, Benth. Annual, usually a foot high or more, and more or 

 less silky-villous : leaflets l to 5, ovate to narrowly lanceolate, 2 to 9 lines long ; stipules 

 gland-like ; flowers small, yellow, on peduncles exceeding the leaves, bracteate with a 

 single leaflet; calyx-teeth linear, much exceeding the tube, about equalling the corol- 

 la ; pod linear, straight, smooth, an Inch long, 5- to "-seeded. Watson in Botany of 

 Wheeler's Surveys west of the One Hundredth Meridian. 



