364 



FABACEAE. 



Vol. II. 



10. Psoralea hypogaea Nutt. Small 

 root. Fig. 2500. 



Indian Bread- 



Psoraka hypogeac Nutt. ; T. it G. Fl. .\'. 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'-li' long, 2"-3" wide, entire, often 

 mucronate-tipped, narrowed at the base ; peduncles J'-3' 

 long; spikes short, dense, V-i' long; bracts ovate, acute, 

 shorter than or nearly equalling, the dull blue corolla; pod 

 S" long or more, somewhat hirsute, slender-beaked. 



Plains, Xebraska and Colorado to Texas. Montana and 

 New Mexico. May-.Uine. 



II. Psoralea stipulata T. & G. Large-stipuled 

 l'.^oralea. Fig. 2501. 



Psoralea stipulata T. & G. Fl. N. .\. i : 688. 1840. 



Sparingly pubescent or glabrous, nearly glandless, 

 branched, diffuse or ascending, stems i-2 long. Pe- 

 tioles shorter than the leaves ; stipules foliaceous, ovate 

 or lanceolate, about 6" long ; leaves pinnately 3-folio- 

 late ; leaflets oval or elliptic, i'-2' long, entire, narrowed 

 at the base, obtusish at the apex, the terminal one on 

 a stalk ;i"-6" long; peduncles mainly a.xillary, longer 

 than the petioles; racemes short, dense, i' long or less; 

 flowers purple, 4"-5" long; bracts ovate, acute or acu- 

 minate, membranous, deciduous ; pod not seen. 



In rocky places. Ohio. Indiana and Kentucky. Local. 

 June-July. 



12. Psoralea pedunculata (Alill.) \'ail. Samson's Snakeroot. Fig. 2502. 



Hcdysarum pcdunculatuin Mill. Gard. Diet. Ed. 8. 



no. 17. 1768. 

 Psoralea melilotoides Michx. Fl. Bor. Am. 2 : 58. 1803. 

 P. pedunculata Vail, Bull. Torr. Club 21 : 1 14. 1891. 



Erect, slender, sparingly branched, i-22 high, 

 more or less pubescent and rough. Glands of the 

 foliage small and inconspicuous ; leaves petioled, 

 pinnately 3-foliolate; petioles shorter than or 

 equalling the leaflets; stipules subulate; leaflets 

 oblong-lanceolate, iV-i' long, 4"-7" wide, entire, 

 obtuse at each end, the apex mucronulate, the 

 terminal one on a stalk 2"-6" long; racemes axil- 

 lary and terminal, on peduncles much exceeding 

 the leaves, rather loosely flowered, 2'-^' long; 

 bracts ovate-lanceolate, acuminate, early decidu- 

 ous, glandular ; flowers purplish, about 2" long ; 

 pod nearly orbicular, strongly wrinkled trans- 

 versely. 



In dry soil, Virginia to Ohio, Illinois. Kansas, south 

 to Florida and Texas. March-July. Congo-root. 

 Bob's-root. 



