622 FABACEAE 
5 Psoralea Reverchónii S. Wats. Foliage strigose, or glabrate below. Stems erect, 
6-9 dm. tall, branching: stipules subulate: petioles shorter than the leaflets : leaflets 3-5, 
the blades linear-oblong or linear-elliptie, 1.5-3.5 em. long, acute at each end, glandular : 
peduncles sometimes shorter than the subtending leaves, corymbosely branched: calyx 
silky-strigose ; tube shorter than the narrowly lanceolate lobes : corolla fully 1 em. long: 
pods not seen. 
On rocky prairies, the Indian Territory and Texas. Spring and summer. 
6. Psoralea cuspidàta Pursh. Foliage strigillose-canescent or glabrate below. 
Stems erect, 4-6 dm. tall, branching: stipules subulate-lanceolate: leaflets 5, the blades 
elliptic-oblanceolate to spatulate, 1.5-4 cm. long, glandular, usually apiculate : racemes as 
long as the stout peduncles or shorter: calyx very glandular, somewhat accrescent; tube 
gibbous on the upper side; lobes oblong-lanceolate, longer than the tube, awn-tipped: 
corolla 1.5-2 em. long: pods enclosed in the calyx, about 8 mm. long, glabrous, each 
tipped with a short recurved beak. 
On plains or prairies, Northwest Territory to Texas and New Mexico. Spring. 
7. Psoralea cyphocalyx A. Gray. Foliage strigillose. Root perpendicular with a 
globose thickening below the summit : stems erect, simple or sparingly branched, 4-9 dm. 
tall, rather wand-like: stipules linear: petioles much shorter than the leaflets: leaflets 
3-5, the blades linear to linear-oblanceolate, 1.5-10 cm. long, glandular, acute : peduncles 
longer than the racemes: calyx densely strigose ; tube gibbous on the upper side ; lobes 
lanceolate, shorter than the tube: corolla 1 cm. to nearly 1.5 cm. in length: pods not 
seen. 
In sandy soil and on dry bluffs, Texas. Spring. 
8. Psoralea canéscens Michx. Foliage canescent. Root oval or fusiform: stems 
erect, 3-9 dm. tall, widely branching : stipules subulate-lanceolate : leaflets 3, or 1 on the 
upper leaves, the blades glandular, varying from obovate or oval to suborbicular, 1.5-6 cm. 
long, usually rounded at the apex, attenuate into petiolules: peduncles as long as the sub- 
btending leaves or twice as long : calyx glandular, accrescent ; tube gibbous on the upper 
side ; lobes lanceolate or oblong-lanceolate, longer than the tube : corolla about 1 cm. long : 
pods less than 1 em. long, with an oval or ovoid body and a straight acute beak. 
In sand, North Carolina to Florida and Alabama. Spring. 
9. Psoralea hypogaéa Nutt. Foliage strigose. Root globose or fusiform : leaves 
erect or spreading, with petioles much longer than the leaflets.: stipules lanceolate or oblong- 
lanceolate : leaflets 5-7, the blades linear to linear-oblanceolate, 1.5-4 cm. long, acute: 
racemes subglobose to oblong, nearly sessile or on peduncles overtopping the leaves: calyx 
conspicuously pubescent; tube campanulate; lobes lanceolate, longer than the tube: 
WA about 1 cm. long: pods narrow, about 1 cm. long, each with a slender attenuate 
ak. 
On prairies, Nebraska to Colorado, Texas and New Mexico. Spring and summer. 
10. Psoralea subacaülis T. & G. Foliage hirsute. Root elongated fusiform : Wen 
subterranean : leaves with ascending or spreading petioles which are much longer than the 
leaflets : stipules ovate-lanceolate : leaflets 5-7, the blades narrowly oblong, or oblong- 
oblanceolate or obovate-oblong, 1.5-3 em. long, usually obtuse : peduncles often surpassing 
the leaves: racemes dense, shorter than the peduncles: calyx hairy; tube campanulate : 
lobes®ovate, or the lower one oblong-ovate; much longer than the rest: corolla blue, 
1-1.5'em. long: pods not seen. 
In rocky soil, Nashville, Tennessee. Spring. 
ll. Psoralea esculénta Pursh. Foliage hirsute. Root obovoid or fusiform : wore 
erect or spreading, 0.5-3 dm. long, usually branching: leaves with petioles p ap i 
leaflets in length : stipules lanceolate to linear: leaflets 5, the blades oblong, oblanceo il d 
or linear-elliptic or rarely cuneate, 2-5 cm. long, commonly apiculate : peduncles usua y 
about as long as the subtending leaves: racemes shorter than the peduncles : in : 
landular ; tube gibbous on the top ; lobes lanceolate, about as long as the tube, oxen y 
onger lower ones: corolla 1.5-2 cm. long: pods enclosed in the calyx, the obovol 
shorter than the slender beak. 
On plains or prairies, Northwest Territory to Montana, Wisconsin, Texas and Louisiana. 
and summer, . 
12. Psoralea virgata Nutt. Foliage strigillose, or glabrate below. Root sepe 
obovoid: stems erect, 3-7 dm. tall, simple or sparingly branched: stipules e un 
lanceolate: leaflets mostly 1, the blades glandular, linear or the lower ones 0 Ta 
ovate-oblong, acutish, reticulated, much longer than the petiole: racemes 2-4 cm. : 
Spring 
