302 Obdke 46.— LEGUMINO&SL 



sistent ; petals of ubout equal length, those of the keel nearly distinct 

 and straight; vexilium orbicular, emarginatc ; stamens 10, distinct, 

 deciduous ; legume inflated, stipitate, many (or by abortion few)- 

 seeded. — 11 Lvs. palmately 3-foliate, or simple. 



§ Leaves simple. Flowers yellow Nos. 1 — 3 



5 Leaves 3-foliate. — Fls. blue, in few elongated racemes No. 4 



— Fls. white in few elongated racemes, (a) 

 — Fls. yellow, solitary or in short racemes, (b) 



a Stipules leaf-like, longer than the petioles Nos. 5, 



a Stipules much shorter, or not longer than the petioles Nos. 7, 8 



b Pedicels not longer than the calyx. Dry in? dark l\os. 0, 10 



b Pedicels much longer than the calyx. Drying bright. Nos. 11 — 13 



1 B. perfoliata R. Br. Glabrous and ' glaucous, lvs. oval, orbicular, ]>erfoliate; 

 fls. solitary, axillary. — S. Car. and Ga. (Savannah, Feay) in the pine woods. St. 

 branching, 1 to 2f high. Lvs. large (2\ by 2'), all turned one way, and com- 

 pletely closed at base around the stem or branch. Corolla G" long, on a pedicel 

 half as long. Pod large, inflated. A remarkable species. May — Jl. 



2 B. niicropbylla Nutt. " Lvs. simple, sessile, roundish, cuneiform; the upper 

 somewhat clasping, stipules roundish ; fls. axillary; legumes short, subglobose." — 

 W. Fla. to Ala. St. much branched. Lvs. small (7 to 10" in length), the upper 

 partially coalescing with the stipules. Described by Mr. Nuttall from lato fruit- 

 ing specimens. Not since found ? 



3 B. simplicifolia Groom. Glabrous ; lvs. broadly ovate, obtuse, sessile ; slip. 

 none; racemes terminal, elongated, many -flowered; bracts ovate, as long as tho 

 pedicels. — Quincy. Fla. St. furrowed, branching, 2 to 3f high. Lvs. large (2 to 

 4' by 1£ to 3'), rather firm, shining above. Fls. 8 ' long, the pedicels shorter. 

 Leg. ovate, about 6" long. Jn. — Sept. 



4 B. australis R. Br. Glabrous; petioles short; lfts. obovate or somewhat ob- 

 long, obtuse : stip. lanceolate, rather longer than the petioles, distinct at base ; 

 rac. long, erect ; leg. oblong-oval, stipe long as the calyx. — Alluvial soils, Ohio 

 River to Ga. and La. St. 2 to 3f high, branched. Petioles 1 to 6" long. Lfts. 

 1| to 3' by £ to 1', sometimes acute. Stip. -J- to 1' long. Fls. indigo blue, largo, 

 very showy. Pod about 2' long. Jn. — Aug. 



5 B. leucophaea Nutt. Villous : petioles almost ; lfts. oblanceolate, varying 

 to ©bovate ; stip. and bracts large, triangular-ovate, persistent ; rac. nodding, the 

 many flowers turned to the upper side on their long pedicels ; leg. ovoid or roundish, 

 inflated. — Common in wild prairies, "W. States and southward. St. 2 to 3f high, 

 smoothish when old. Lfts. 2 to 3' by \ to 1', stipules more than half as large. 

 Rqc. 20 to 50-flowered, inclined horizontally. Pedicels 1 to 2' long. Corollas 

 very large, ochroleucous. Apr. 



6 B. villosa Ell. Villous-pubescent ; petioles almost 0; lfts. lance-oblong, or 

 oblanceolato ; slip, lance-linear, persistent; rac. long (erect?); bracts minute, de- 

 ciduous; ped. notsecund; leg. oblong. — N. Car. to Ga., rare. Plant of coarse as- 

 pect, as well as No. 5, 2 to 3f high. Lfts. 2 to 3' long, obtuse, tapering at base, 

 becoming smoothish when old. Fls. dirty white, nearly 1' long. Jn., Jl. 



7 B. leucantha Torr & G r. Glabrous and glaucous ; lvs. petiolato ; lfts. cunei- 

 form-obovate, obtuse ; stip. lance-linear about as long as petioles, often caducous ; 

 rac. elongated, erect ; bracts caducous ; leg. inflated, stipitate. — Conspicuous in 

 rich soils, prairies, etc., "W. States to Ga. and Fla. St. thick, 2 to 4f high, 

 branched above. Rac. 6 to 24' long, with large white fls. Lfts. 1 to 2' long. 

 The whole plant turns bluish-black in drying. May — Jl. 



8 B. alba R. Br. Glabrous, fastigiate-branched above; petioles slender; lfts. 

 elliptic-oblanceolate, acute at baso ; stip. and bracts m inute, caducous ; rac. erect 

 or nodding, on a long peduncle ; pedicels rather longer than calyx. In rich soils, 

 Va. to Fla. Plant 2 to 3f high. Lfts. about 1' long, a third as wide, the petiole 

 about half as long. Fls. pure white. Plant does not blacken in drying. Mar. Apr. 



9 B. lanceolata Ell. Much branched, bushy; lvs. subsessile ; lfts. narrowly 

 elliptic, varying to oblanceolate, tapering to a petiolule, obtuse ; stip. almost 

 none ; fls. axillary, subsolitary, short-pedicelled ; leg. ovate-globous. Pine woods, 

 S. Car. to Fla. and La. About 2f high. Foliage yellowish-grc<m ; lvs. 2 to * 



