302 ORDER 46. LEGUMINOS^E. 



sistcnt ; petals of about equal length, those of the keel nearly distinct 

 :uul straight ; vexillum orbicular, emarginatc ; stamens 10, distinct, 

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

 sccded. 74 Lvs. pahnately 3-foliate, or simple. 



$ Leaves simple. Flowers yellow Xos. 1 ", 



Leaves 3-foliate. Fl?. blue, in few elongated racemes. No. I 



Fls. white in few elongated racemes, (a) 

 FIs. yellow, solitary or in short racemes, (b) 



a Stipules leaf-like, longer than the petioles Nos. 5, 6 



a Stipules much shorter, or not longer than the petioles No.<. 7, 8 



b Pedicels not longer than the calyx. Drying dark Nos. 9, 1:) 



b Pedicels much longer than tho calyx. Drying bright. Xos. 1118 



1 B. perfoliata 1!. Br. Glabrous and glaucous, Ivs. oval, orbicular, perfoliate; 

 fls. solitary, axillary. S. Car. and Ga. (Savannah, Fcay) 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 tha stem or branch. Corolla G" long, on a pedicel 

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



2 B. microph^lla Nutt. "Lvs. simple, sessile, roundish, cuneiform; tho upper 

 somewhat clasping, stipules roundish ; Us. axillary ; legumes short, subglobous." 

 "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 late fruit- 

 ing specimens. Not since found ? 



3 B. simplicifolia Groom. Glabrous ; Ivs. broadly ovate, obtuse, sessile ; stip. 

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

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

 I' by 1J to 15')) rather firm, shining above. FIs. 8'' long, the pedicels shorter. 

 Leg. ovate, about G" long. Jn. Sept. 



4 B. australis E. Br. Glabrous ; petioles short ; Ifts. 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 

 lliver to Ga. and La. St. 2 to 3f high, branched. Petioles 1 to G" long. Lfls. 

 1 J to 3' by -J to 1', sometimes acute. Stip. \ to 1' long. FIs. indigo blue, large, 

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



5 B. lexicopiicca Nutt. Villous: petioles almost 0; Ifts. oblanceolato, varying 

 to obovate ; stip. and bracts largs, triangular-ovate, persistent ; rac. nodding, the 

 utany 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, 

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

 Rac. 20 to 50-flowercd, inclined horizontally. Pedicels 1 to 2' long. Corollas 

 very large, ochroleucous. Apr. 



6 B. villosa Kll. Yillous-pubescent ; petioles almost 0; Ifts. lance-oblong, or 

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

 ciduous; ped. notsecund; kg. oblong. N. Car. to Ga., rare. Plant of coarso as- 

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

 becoming smoot Irish when old. Fis. dirty white, nearly 1' long. Jn., Jl. 



7 B. leucautha Torr & Gr. Glabrous and glaucous; Ivs. petiolate; Ifts. cunei- 

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

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

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

 branched above. Uac. G 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; Ifts. 

 elliptic-oblanceolate. acute at base ; stip. and bracts minute, caducous ; rac. erect 

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

 Va. to FU. Plant 2 1o :if 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 F.U. Much branched, bushy ; Ivs. subsessile ; Ifts. narrowly 

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

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

 8. Car, to Fla. and La. About 2f high. Foliage yellowish-grcon ; Iv.s. 2 to 3 ' 



