Vox,. II.] 

 6. 



PEA FAMILY. 



291 



Kuhnistera tenuifolia (A. Gray) Kuntze. 



(Fig. 2113.) 



Petalostemon tenuifolius A. Gray, Proc. Am. Acad. 



11:73. l8 ?6- 

 Kuhnistera tenuifolia Kuntze, Rev. Gen. PI. 192. 



1891. 



More or less pubescent, erect, branching, i-2 

 high. Leaves short-petioled; leaflets 3-5, linear, 

 obtuse, somewhat involute, dotted with sessile 

 glands, 3 // -5 // long, >^ // -i // wide, very short- 

 stalked or sessile; peduncles terminal, elongated, 

 bracted; spikes oblong or cylindric, %'-!%' long, 

 about 5 X/ thick, the rachis pubescent; flowers 

 rose-purple, about 2> // long; bracts ovate, aris- 

 tate, silky-pubescent, slightly exceeding the very 

 silky-pubescent calyx; standard nearly orbicular, 

 cordate, cucullate. 



In dry soil, Kansas? Arkansas to New Mexico. 

 July-Aug. 



Silky Prairie-clover. 



7. Kuhnistera foliosa (A. Gray) Kuntze. 

 Leafy Prairie-clover. ( Fig. 2114.) 



Petalostemon foliosus A. Gray, Proc. Am. Acad. 7: 336. 



1868. 

 Kuhnistera foliosa Kuntze, Rev. Gen. PI. 192. 1891. 



Erect, branching, or sometimes simple, glabrous 

 throughout, i-3 high. Leaves numerous, peti- 

 oled: leaflets 13-31, close together, short-stalked, 

 linear-oblong or slightly oblanceolate, 4 // -7 // long, 

 \ f '-\W wide, acute or obtuse, mucronate at the 

 apex, narrowed at the base; spikes terminal, long- 

 ovoid or cylindric, i / -2 / long, 5 // -6 // thick, densely- 

 flowered; peduncles short, bracted; bracts lanceo- 

 late, awn-pointed, longer than the glabrous calyx; 

 flowers rose-purple, about i" long; standard broad, 

 nearly orbicular; wings and keel-petals oval; calyx- 

 teeth finely ciliate. 



Along rivers, Illinois and Kentucky. July-Aug. . 



8. Kuhnistera villosa (Nutt.) Kuntze. 

 Hairy Prairie-clover. ( Fig. 2115.) 



Petalostemon villosus Nutt. Gen. 2: 85. 1818. 

 Dalea villosa Spreng. Syst. Veg. 3: 326. 1826. 



Kuhnistera villosa Kuntze, Rev. Gen. PI. 192. 

 1891. 



Ascending or decumbent from a deep root, 

 branching at the base, densely villous or silky- 

 pubescent all over, i-2 high. Leaves short- 

 petioled or nearly sessile; leaflets 9-17, ap- 

 proximate, linear-oblong, or slightly oblanceo- 

 late, acute or obtuse and often aristate at the 

 apex, narrowed at the base, ^ // ~5 // long, i // - 

 2" wide; spikes terminal, clustered or solitary, 

 short -peduncled, cylindric, I '-3' long, 5 "-6" 

 thick, very dense; bracts lanceolate, acumin- 

 ate, exceeding the densely villous calyx; co- 

 rolla rose-purple or rarely white, standard ob- 

 long; wings and keel-petals oblong-obovate. 



Prairies, Wisconsin to the Saskatchawan 

 region, south to Missouri and Montana. A*%. 



