FABACEAE 693 
mm. long, about equalling the calyx, the minute beak eccentric. [Psoralea 
a Nutt.|—Moist woods and Ene Coastal Plain and rarely adj. 
provinces, Ala. to Tex. and Okla.—Sum 
5. O. pedunculatum (Mill) Rydb. Plant 3-8 ep tall: leaflets 3; blades 
lanceolate to narrowly ee or oge of the lower ones obovate, oval, elliptic, 
or elliptic-lanceolate, 3-7 cm. calyx i [iren upper lobes lanceo- 
late, longer than the tube: corolla purplish standard 5-7 m m. long, the blade 
ovate, rounded: pod about 4 m ong, less than twice as ions as the calyx. 
[Psoralea pedunculata Vail]__Conao. a. SAMPSON'S Pied i y 
Ww Dons various provinces, Fla. to Tex., Kans., Ind., and Va.—Spr.— 
O. gracile (Chapm.) Rydb. Plant 2-7 dm. tall: leaflets 3; blades lanceo- 
we to oie TE or some of the lower ones narrowl ellipt ic or broad- 
ened upward, 1.5—5 e . lon ng: nee ~ a SA upper dias deltoid or 
triangular-ovate, sho ie Tan a pu rola pu s ipe ard 4—5 mm. 
long; blade suborbieular: pod a mm. long, m s wice as dons as 
the calyx, we oralea gracilis on ]—Pinelands, "Constal Plain, Fla., and 
Ga.—Spr.— 
19. RHYTIDOMENE Rydb. Perennial herbs with rootstocks and gland- 
dotted foliage. Leaflets 5 or 7: blades very slender. Racemes axillary, long- 
peduncled, lax. Calyx with 5 lobes, all broad 
except the lower one. Corolla blue or violet, 
longer than the calyx: standard with a very 
broad blade: v pa slightly longer than the 
eee rd. Pod crescent-shaped, exserted, 
mewhat "ON pos cross-wrinkled, 
i beaked.—One species. 
cA pi Rydb. Plant 
1. R. 
2-6 dm. tall, glabrous or obscurely pubes- 
cent about the span ee leaflets 5-7; 
, 9-8 em. 1 
blades linear-filiform, 3 E ong e 
nU deltoid; lower one laneeolate, 
twiee as long as the VAR standard um 
mm. s the blade suborbieular: pod abou 
10 mm. long. Pria Lupinelius. Mich ]—Sandhils and dry pinelands, 
Coastal Plain, C Fla. to N. C.—Spr.-s 
20. PEDIOMELUM Rydb. Perennial herbs with deep-seated tuberous 
roots. Leaflets 3-7, digitate: blades dp punctate. Spikes or racemes 
dense, peduncled. Calyx somewhat 2-lipped: e campanulate, gibbous a p 
base on the upper side: lobes 5, the lower one the longest: corolla blue 
purple, longer than the calyx: Sante with a broad blade: wings much ius 
than the standard. Pod exserted from the s the body broad, compressed, 
beaked.—About 22 species, North America 
Stem erect, elongate, with alternate branches: blades of the xc broad: standard 
with a pair of callo us spurs at the base of the blade: 
glabrous. 1. P.canescens. 
Stem very short, a e caudex on which the leaves and flower- 
s are Ane e “blades of the leaflets narrow: standard 
ithout spurs: pod strigos 9. P. subacaulis. 
1. P. canescens (Michx.) Rydb. Plant 3-9 dm. tall, bushy- nd canes- 
cent: leaflets 1 or 3; blades obovate or oval to suborbicular, 1.5-6 em. long: 
