453 
PSORALEA Onobrychis. 
Rough-podded Psoralea. Louisiana Saint-foin. 
—— 
DIADELPHIA DECANDRIA. ‘ 
Nat. ord. Lecuminosa. Jussieu gen. 345. Div. V. Corolla irregularis 
papilionacea. Legumen 1-loc. 2-valve.—P APILIONACEJ&. Brown in ap- 
pend. Flind. voy. 2. 
PSORALEA. Suprä vol. 3. fol. 223. 
P. Onobrychis, caule alto glabro; foliis ternatis, foliolis ovato-lanceolatis 
subpubescentibus, racemis (axillaribus) longé pedunculatis, secundis, 
legumine subovato muricato glabro, radice flagelliformi. Nuttall gen. 2. 
104; excluso Muhlenb. catal. (Ex angl. versum). 
Stylosanthes racemosa. Fraser's catalogue for 1813. 
Caulis spadiceo-fuscescens, 3-5-pedalis; ramis striato-angulosis villosis. 
Foliola 3-4-uncialia latitudine subduplo minore longè acuminata, utrinque 
punctata villosaque; petioli proprii villosi, foliolorum lateralium subminorum: 
brevissimi, centralis semunciam longus v. magis triploque petiolo communi bre- 
vior; stipule parve lineari-subulate, erecte, hirsute. Racemi plurimi, soli- 
tarii, confertiùs spicati, subequales folio; spica subinterrupta, duplo brevior 
pedunculo dense villoso v. multò magis, pedicelli per binos? vel trinos? segregati - 
pilosiores subbreviores calyce, deflexi, bracteá singulá lineari-subulata hirsuta, 
citò caduca ad basin cujusque fasciculi: flores parvuli, purpurascentes. Cal. 
turbinato-cainpanulatus, impunctatus, appresse villosus, duplo brevior co- 
rollá, (10-nervis?) brevi-bilabiatus equalis dentibus 5 acutis, labio superiore 
2-dentato, inferiore 3-dentato. Corolle petala omnia obtusa; carina brevior: 
inclusa, (non vidimus recentem). Germ. oblongum, brevius calyce, compres-- 
sum, utrinque attenuatum (subpedicellatum?) papillosum: stylus duplo 
longior, glaber, à medio cum angulo obtuso ascendens: stigma punctum sub- 
capitellato-obtusum. Stam. diadelpha: filamentum alterum brevissime 9- 
fidum: anthere subrotundo-ovate acutule. (Legumen ex Nuttall, calycem 
exsuperans, monospermum, nigrum, tuberculis vehementér exasperatum ). 
A species observed by Mr. Nuttall on the banks of the 
river Merrimek, a few miles from St. Louis, in Louisiana. 
That botanist had not however seen the flowers before he 
recorded it, but ranked it in the present genus from the 
glandularly dotted foliage and the short one-seeded pod; 
observing at the same time that the plant had much the ap- 
pearance of an Hepysarum, and naming it specifically after 
the Onobrychis (or Saint-foin plant) of that genus. 
Seed was given by Mr. Nuttall to Mr. Lambert; and 
the plant raised in the gardens of Boyton House, whence 
the sample for the drawing was kindly sent to us during 
last summer. 
