FABACEAE 623 
surpassing the peduncles in length : calyx hirsute ; lobes lanceolate or oblong-lanceolate, 
acute, longer than the tube: corolla 6-7 mm. long: pods suborbicular, oblique, about 5 
mm. long, strongly transversely wrinkled, with a curved beak. 
In sand, eastern Georgia and Florida. Spring and summer. 
13. Psoralea rhombifólia T. & G. Foliage more or less densely strigose. Roots 
short or elongated : stems branching at the base, the branches decumbent or prostrate, 1-9 
dm. long, simple or branched: stipules lanceolate to ovate: leaflets 3, the blades oval- 
rhomboidal varying to ovate or obovate, or those of the lower leaves suborbicular, 1-3 em. 
long, acute or obtuse, sometimes mucronate: racemes head-like, much shorter than the 
peduncles: calyx pubescent : lobes lanceolate to oblong-lanceolate ; tube somewhat gibbous 
on top: corolla dark blue or reddish, about 5 mm. long: pods about 1 em. long, hirsute, 
each with a long straight beak. 
In dry soil, Texas and adjacent Mexico. Spring and summer. 
14. Psoralea Americana L. Perennial from a shrubby base, glandular throughout. 
Stems branched below, the branches erect or ascending, 6-12 dm. long: stipules lanceo- 
late : leaflets 3, the blades suborbicular in outline, 1.5-3.5 cm. in diameter, irregularly 
crenate-dentate, the terminal one broadly cuneate at the base, the lateral ones oblique: 
racemes shorter than the peduncles which are longer or shorter than the petioles: calyx 
pubescent ; lobes very unequal, the lower one much longer and broader than the lanceolate 
upper ones : corolla about 5 mm. long: pods barely exceeding the calyx-lobes. 
In waste places, Florida. Spring to fall. 
_ 15. Psoralea simplex Nutt. Foliage more or less strigose. Roots cylindric or tur- 
binate: stems erect, 3-6 dm. tall, sometimes branched at the base, paniculate above: 
stipules subulate-setaceous : leaflets 3, the blades lanceolate or oblong-lanceolate, 2-6 cm, 
long, mucronate, reticulated : racemes usually shorter than the peduncles: calyx hirsute ; 
lobes lanceolate or the lower ones oblong, ail longer than the tube: corolla fully 1 cm. 
long: pods about 4 mm. long, broader than long, with a high crest, obliquely wrinkeled, 
the beak short, upcurved. 
In sandy soil, Arkansas to the Indian Territory, Alabama and Texas. Spring. 
l6. Psoralea grácilis Chapm. Foliage glabrous or sparingly strigillose. Stems 
usually branched at the base, the branches wiry, ascending or spreading, 2-7 dm. long. 
simple or sparingly branched above : stipules linear-lanceolate: leaflets 3, the blades 
elliptic, oblong or oblong-lanceolate, or some of them on the lower part of the plant 
broadest above the middle, 1-3.5 cm. long, usually obtuse or retuse, sometimes mucronate : 
peduncles much longer than the accompanying leaves: racemes 1-3 cm. long: calyx spar- 
ingly pubescent; tube campanulate ; the upper lobes triangular or triangular-ovate, mostly 
shorter than the tube : corolla purplish, 4-5 mm. long: pods suborbicular. 
In sandy pine lands, southern Georgia and Florida. Spring and summer. 
17. Psoralea pedunculata (Mill. ) Vail. Foliage strigillose, sometimes sparingly so. 
Stems 3-8 dm. tall, simple below or branched at the base, the branches erect or ascend- 
ing, paniculate above : stipules linear-subulate : leaflets 3, the blades lanceolate to narrowly 
oblong, or those of the lower part of the stem oblong-oblanceolate, 3-7 cm. long, usually 
Mi peduncles much longer than the subtending leaves, surpassing the racemes in 
ei: calyx short-pedicelled ; tube campanulate ; the upper lobes lanceolate, acute, 
onger than the tube: corolla purplish, 5-7 mm. long: pods suborbicular, nearly 5 mm. 
ong, margined, transversely wrinkled. [P. melilotoides Michx.] 
Re k ead soil or dry woods, Indiana to Kansas, North Carolina, Florida and Texas. Spring and 
is 18. Psoralea Onóbrychis Nutt. Foliage softly pubescent or glabrate. Stems erect, 
-4 m. tall, branched at least above: stipules nearly subulate: leaflets 3, the blades 
ovate to ovate-lanceolate, 3-12 cm. long, acuminate, ciliate, rounded at the base : peduncles 
Surpassing the subtending petioles: racemes shorter than the peduncles: calyx campanu- 
-= ; lobes ovate, obtuse, shorter than the tube : corolla 5-7 mm. long : pods ovoid, 1 cm. 
ong, black, transversely prominently reticulated, twisted at the apex. 
sign streams, Ontario to Missouri, South Carolina and Tennessee. Summer. 
9. Psoralea macrophylla Rowlee. Foliage finel ubescent. Stems erect or 
ascending, 5-9 dm. tall, Saole or nearly so: kahati 3 the teAcs ovate, 6-10 cm. long, 
Em or notched at the apex, undulate, finely reticulated and slightly paler beneath than 
Ens €, cordate or subcordate at the base, about as long as the petioles or shorter on the 
i PE of the stem : racemes 10-15 cm. long; rachis closely pubescent, and with long- 
lobis 1 glands: pedicels 2-3 mm. long: calyx pubescent like the rachis and pedicels; 
anceolate, acuminate, longer than the tube: corolla 8-9 mm. long. 
In woods, Tryon Mountain, North Carolina. Spring and summer. 
