282 ORDER XLIII. LEGUMINOS.E. 



Genus XXIV.— PSORA'LEA. L. 16—10. 

 (From the Greek psoraleos, scurfy ; the appearance of the calyx.) 



Calyx campanulate, 5-toothed, sprinkled with glandular dots, 

 lower segments a little the longest. Stamens diadelphous. 

 Legume indehiscent, 1-seeded, slightly beaked, as long as the 

 calyx. 



1. P. canes'cens, (Mich.) Root tuberous. Stem branching, can escent- 

 ly pubescent. Leaves entire, pimple above and trifoliate below, broad 

 obovate-lanceolate, dotted. Stipules subulate. Peduncles axillary, 

 4 — 7-flowered. Calyx inflated, glandular, brownish. Legume short, 

 glandular. — Yellowish. 2£. May — July. Middle Car. and Geo. Com- 

 mon. 2 — 3 feet. , 



2. P. Lupinellus, (Mich.) Stem somewhat branched, slender, gla- 

 brous. Leaves digitate on long petioles. Leaflets filiform, 5 — 7-foliate. 

 Racemes longer than the leaves, many-flowered. Peduncles thick. Ca- 

 lyx small, glandular, the lower segment longest. Corolla much longer 

 than the calyx, with a sub-orbicular vexillum, small, with a recurved 

 point, rugose. — Pale violet. If. May — July. Sand-hills of middle 

 Georgia. 2 — 3 feet. 



3. P. virga'ta, (Nutt.) Stem virgate, somewhat branched, slightly 

 pubescent. Leaves simple, linear-lanceolate, remote, with setaceous stip- 

 ules. Flowers in cylindrical spikes. Spikes axillary, not as long as the 

 leaves. Bracts oblong, calyx dotted with glands, lower segment a little 

 the longest. Corolla but little longer than the calyx. Legume 1-seed- 

 ed. — Pale violet. 1(. Near St. Mary's, Geo. 2 feet. 



4. P. melilotoi'des, (Mich.) Stem diffuse, slightly pubescent, branch- 

 ing. Leaves ternate. Leaflets oblong-lanceolate, dotted with glaniis. 

 Flowers in oblong spikes, with broad, conspicuous, colored, caducous brac- 

 teas. Spikes axillary and terminal. Calyx hairy, purplish, glandular. 

 Keel small. Legume mucronate, oval, rugose, 1-seeded. — Purple. If. 

 May — June. Very common in middle and upper Carolina and Geor- 

 gia. 2 feet. 



5. P. eglandulo'sa, (Ell.) Stem pubescent. Leaves trifoliate, leaflets 

 oblong-lanceolate. Flowers in oblong spikes. Bracts broad, lanceolate, 

 acuminate. Calyx very villous. Legume nearly orbicular, with trans- 

 verse wrinkles. Very similar to the preceding. — Purple. % . . May — 

 June. Dry soils. 1 — 2 feet. 



6. P. multiju'ga, (Ell.) Stem thick, glabrous, furrowed. Leaves pin- 

 nate, irregular, 9 — 10 pairs. Leaflets oblongdanceolate, hairy on the 

 under surface, sometimes pubescent on the upper. Flowers in oblong 

 spikes. Bracts small. Calyx with very long teeth, villous on the mar- 

 gin. Legume 1-seeded. — Violet. 2£. May — June. Middle and upper 

 country. We found it near Greenville, S. Car. 10—20 inches. 



Genus XXV.— AMOR'PHA. L. 16—10. 

 (From a, priv., and morphe, form, in allusion to the irregular form of the corolla.) 



Calyx campanulate, 5-cleft, persistent. Vexillum ovate, con- 

 cave, unguiculate ; wings and keel wanting. Stamens mona- 

 delphous. Style filiform. Legume falcate, rough or tubercu- 



