A.MORPHA. XLViJ. LEGUMlNOSiE. 225 



T. ViRGiNiANA. Pers. (Galcga. Lirm.) Goat's Rue. Cat-gut. 



Erect, villous ; Ip.s. numerous, oblong, acuminate; roc. terminal, subses- 

 sile ; leg. lalcate, villous.— Tj. Plant 1— 2f high, with beautiful white and pur- 

 pie flowers, found in dry sandy soils, Can., la., 111., S. to Flur. Stem simple. 

 Leaflets 15—27, 10—13" by 2—3", mucronate, straight-veined, odd one oblong- 

 obcordate,pet.iolules 1" long. Stipules subulate, §' long, deciduous Flowers 

 large, m a dense, terminal raceme. Calyx very villous. Banoer white keels 

 rose-colored, wings red. Jl. ' 



14. PSORALEA. 



Gr. xpcopaksog, leprous or scaly ; alluding to the glandular dots. 



Calyx 5-cleft, campanulate, segments acuminate, lower one longest; 

 stamens diadelplious, rarely somewhat monadelphous ; legume as lou^^ 

 as the calyx, 1 -seeded, indehisceut.— 'i; or h Often glandular. Lvs. 

 various. Slip, cohering with the base of the petiole. Fls. cyanic. 



1. P. FLOHIBUNDA. NuH. 



Canescent, much branched, destitute of glands; Ivs. palmately 3— 5- 

 lohate; If/s. oblong-obovate, varying to linear; slip, setaceous; roc. slender, 

 40— 50-flowered, twice longer than the leav^es; pedicels as long as the flowers 

 and longer than the small, ovate, acuminate bracts; vex. roundish; leg. smooth. 

 —Alluvial soil, 111. Alead. .' and Ark. W. to the Rocky Mts. Stem 2 — 4f hiHi 

 the branches spreading. Leaflets 1—2' bv 2 — 1", common petiole i— 1' long! 

 Flowers bluish purple, nearly as large (3" long) as in the two following. Jn. 



2. P. ESCULENTA. Ph. 



Hirsute, erect, branching ; Ivs. palmately 5-foliate, Ifls. lanceolate ; spikes 

 axillary, dense ; cal. seg. lanceolate, a little shorter than the corolla ; leg. ensi- 

 form, beaked ; rt. thick and lusiform. 



B. (P. ESCULENTA. Niott.) Nearly acaulescent; Ifts. oblong-obovate.— Mo. 

 near the lead mines. Stem a few inches high. Leaflets 1 — 2' long, nearly 

 half as wide. Flowers pale blue. The root is about 1' diam., rather 'insipid, 

 but is eaten by the Indians, either raw or boiled. Jn. Jl. 



3. P. EGLANDULOSA. Ell. (P. melilotoidcs. Mickx.) 



St. much branched; Ifts. oblong-lanceolate, finely dotted with glands; 

 spikes oblong ; braxts broadly-ovate, acimiinate, and with the calyx hairy ; leg. 

 roundish, transversely wrinkled. — Dry soils, la. ! to Ark. Slender, 2f high, 

 spreading. Leaflets 2 — 2*' long, i as wide, obtus^, longer than the petioles. 

 Flowers blue. Pods 2" diam. Jn. Jl. 



4. P. Onobrychis. Niitt. 



Pubescent; Ifts. ovate, acuminate; rax. elongated; cal. much shorter 

 than corolla, teeth small, obtuse, equal ; leg. ovate, transversely -wTinkled. — 

 Low grounds and thicket'^. Western States ! Stem rigidly erect, nearly simple, 

 3 — 5f high. Leaflets 2 — '^' long, nearly \ as wide. Flowers small, pedicellate, 

 blue. Pods exceeding the c^ lyx, rostrate. Jn. Jl. 



15. AMORPHA. 



Gr. a, privative, fiopcprj, form; alluding to the deficiencies of the corolla. 



Calyx subcampanulate, 5-cleft ; vexillum concave, ungi;iculate, 

 erect ; wings and keel ; stamens exserted ; legume oblong, some- 

 what curved at the point, scabrous with glandular points, 1 — '2-seeded. 

 — Shrubs or half-shrubby American plants. Lvs. unequally pinnate, 

 punctate. Fls. bluish ^chitc.^ in virgatc racemes. 



1. A. FRUTICOSA. 



Pubescent or nearly glabrous, shrubby or arborescent ; Ifts. — 13, oval, 

 petiolulate, very obtuse, the lower pair remote from the stem ; cal. teeth obtuse, 

 short, lower one acuminate and rather the longest; leg. 2-seeded. — A shrub or 

 small tree, 6 — I6f higii, Wis. La,pham! to La. and Flor., W. to Roclcy Mts, 

 Leaves 3 — 5' long, leaflets about 1' by i', rather remote from each other and 



