ORDER XLni. LEGUMINOS.£2. 283 



late with glands, 1 — 2-seeded. Shrubby or herbaceous plants, 

 with pinnate leaves, leaflets numerous, punctate. Flowers in 

 spiked racemes, numerous, pedicels articulated with the flower. 



1. A. fructico'sa, (L.) A shrub with pubescent branches. Leaves 

 alternate, petiolate, generally pinnate, leaflets oval, or elliptical-oblong, 

 obtuse, petiolate. Flowers in terminal racemes. Calyx turbinate, pu- 

 bescent. Vexillum emarginate, obovate, twice the length of the calyx. 

 Style hairy. Legume 2-seeded. — Dark purple. ^ . On the margin of 

 rivers in the low country. 6 — 16 feet. 



2. A. pubes'cens, (Willd.) A small shrub, pubescent, slightly muri- 

 cate. Leaves equally pinnate, many pairs, 20 — 24. Leaflets elliptical, 

 petiolate, mucronate, very pubescent. Flowers in long panicled spikes. 

 Teeth of the calyx nearly equal, purple. Vexillum obcorclate, longer 

 than the calyx. — White. ^ . June — July. Damp soils. 2 — 4 feet. 



A. herbacea, Walt. 



3. A. canes'cens, (Nutt.) Stem suffructicose, softly canescent. Leaves 

 numerous and crowded, 15 — 34 pairs of leaflets, closely arranged, 

 ovate-elliptical, mucronate, small. Flowers in paniculate spikes, sessile, 

 terminal. Vexillum nearly orbicular, tapering slightly at the base, 

 Legume 1 -seeded. — Blue. ^. July — Aug. Banks of streams, middle 

 Georgia. 1 — 3 feet. Lead Plant. 



4. A. Carolima'na, (Croom.) A small shrub, nearly glabrous. Leaflets 

 oblong or elliptical, petiolate, dotted, the lowest pair approximated to 

 the stem. Flowers on very short pedicels. Calyx with short teeth, the 

 two upper obtuse, the three lower longer or nearly equal, villous on 

 the margin. Style hairy toward the base. — Dark blue. "*> . July. 

 Near Wilmington and Newbern. 4 — 5 feet. {Curtis & Croom.) 



Genus XXVL— DA'LEA. L. 16—10. 

 (In honor of Dale, an English botanist) 



Calyx 5-cleft, often glandular, with nearly equal segments. 

 Petals unguiculate, the keel and wing petals united to the sta- 

 men tube. Vexillum inserted into the base of the calyx, short, 

 limb cordate. Stamens monadelphous, the tube being 3-cleft. 

 Ovary with two collateral ovules. Legume 1 -seeded, indehis- 

 cent. Leaves unequally pinnate. Flowers in dense spikes, 

 often capitate. 



1. D. alopecuroi'des, (Willd.) Stem erect, glabrous, branched. 

 leaves numerous. Leaflets 10 — 14 pairs, narrow, elliptical, dotted be- 

 neath. Flowers in cylindrical spikes, villous, caliculate. Segments of 

 the calyx lanceolate, acuminate, hairy. — Blue. %. Middle Carolina 

 and Georgia. 1 — 2 feet. 



Genus XXVIL— PETALOSTE'MON. Mich. 16—5. 



(From the Greek petalon, a petal, and stemon, a stamen ; the stamens and petals b«- 

 ing joined together at the base.) 



Calyx 5-toothed, teeth nearly equal. Petals 5, on filiform 

 claws, 4 of them united to the stamen tube, the fifth free, with 



