PAPILIONACEAE. 



[VOL. II. 



10. Psoralea cuspidata Pursh. Large- 

 bracted Psoralea. (Fig. 2095.) 



Psoralea macrorhiza Nutt. Fraser's Cat. Name only. 1813. 

 Psoralea cuspidata Pursh, Fl. Am. Sept. 741. 1814. 

 Psoralea cryptocarpa T. & G. Fl. N. A. i: 301. 1838. 



Erect or ascending, stout, branched, finely ap- 

 pressed-pubescent, at least above, i-2 high, from a 

 long deep tuberous-thickened root. Petioles equalling 

 or shorter than the leaves, \ l /* f -i f long; stipules linear, 

 acuminate, 6 // -8 // long; leaflets 5, digitate, short- 

 stalked, entire, broadly oblanceolate or oval, obtuse 

 and commonly mucrouate at the apex, narrowed or 

 cuneate at the base, i / -2 / long, $"-7" wide; spikes 

 oblong, dense, i# / -3 / long, i'-i^' thick; peduncles 

 longer than the petioles; bracts lanceolate, long-cus- 

 pidate, equalling or exceeding the bluish corolla; pod 

 oval, membranous, enclosed in the calyx. 



Prairies, Northwest Territory to Kansas, Colorado, 

 Arkansas and Texas. May-June. 



ii. Psoralea esculenta Pursh. Pomme 

 Blanche. Prairie Apple or Turnip. 



(Fig. 2096.) 



Psoralea esculenta Pursh, Fl. Am. Sept. 475. 1814. 

 Rather stout, erect from a large farinaceous 

 root or cluster of roots, little branched, 4 / -i8 / 

 high, densely villous-pubescent with whitish 

 hairs. Lower petioles 2-4 times longer than the 

 leaves; stipules lanceolate, 8"- 1 2" long; leaflets 

 5, digitate, short-stalked, oval or obovate, entire, 

 obtuse, narrowed at base, i / -2 / long, 4 // -io // 

 wide; peduncles equalling or longer than the 

 petioles; spikes oblong, dense, i^'-s' long, i'- 

 i%' thick; bracts lanceolate or ovate, acute, 5"- 

 8" long, nearly equalling the bluish corolla; pod 

 oblong, glabrous, about 2#" long, slightly 

 wrinkled, enclosed in the calyx-tube. 



Prairies, Manitoba and Dakota to Nebraska and 

 Texas. Called Indian or Missouri Bread-root. June. 



12. Psoralea hypogaea Nutt. Small Indian 

 Bread-root. (Fig. 2097.) 



Psoralea hypogaea Nutt.; T. & G. Fl. N. A. i: 302. 1838. 



Similar to the preceding species, but smaller, nearly 

 acaulescent, the stem hardly rising above the ground, 

 densely pubescent with appressed whitish hairs. Petioles 

 2-4 times as long as the leaves; stipules oblong, acutish, 

 about 6" long; leaflets 5, digitate, sessile or nearly so, 

 linear-oblong or oblanceolate, i'-i#' long, 1"-$" wide, 

 entire, often mucronate-tipped, narrowed at the base; pe- 

 duncles ^'-3' long; spikes short, dense, J^'-i'long; bracts 

 ovate, acute, shorter than or nearly equalling the dull 

 blue corolla; pod 5" long or more, somewhat hirsute, 

 slender-beaked. 



Prairies, Nebraska and Colorado to Texas and New Mexico. 

 May-June. 



