308 Order 46.— LEGUMINOSiB. 



trate, slender, 1 to 2f long. Lvs. on long petioles; Iftg. elliptic-obJoDg, acute at 

 each end, the lower often obovate. Slip, as such very small (1" long) but aa 

 bracts they are as broad as the leaflets but much shorter. Fls. deep yellow. Leg. 

 small, adhesive by their retrorsely rough spines. Jn. — Aug. 



18. jESCHYNOM'ENE. (Gv. alaxivojiai, to be modest; alluding 

 to its sensitive property.) Calyx bilabiate, bibracteolatc ; upper lip 

 bifid, lower trifid; vexillum roundish; keel petals boat-shaped, distinct 

 at base ; stamens diadelphous, 5 in each set ; legume exsertcd, com- 

 posed of several truncated, separable, 1-seeded joints. — Lvs. odd-pinnate. 

 Stip. semi-sagittate. Rao. axillary. 



1 -SI- liispida Willd. St. erect, somewhat scabrous, as well as the petioles, pe- 

 duncles and legumes; Ifts. very smooth, 27 to 37 (49, Nutt.), oblong-linear, ob- 

 tuse; stip. ovate, acuminate; rac. 3 to ^-flowered; lomeni compressed, 6 to S-joini- 

 ed.—Q.) Marshes, Penn. to Fla. and La. (Hale). St. 2 to 3f high. Lfts. about i' 

 long. Rao. usually bearing a leaf; Fls. yehow, reddish outside. Leg. 2' long, 

 sinuate ou one side, some of them deeply parted. Aug. 



2 .ai. visQidula Mx. Slender, procumbent, viscidly pubescent; lfts. 7 to 11, 

 obovate; stip. and, bracts veiny; ped. filiform, 1 to 2-flowered; cal. slightly bila- 

 biate, 3 lower teeth nearly equal ; pod. 2 or 3-jointed, deeply lobed. — ® Sandy 

 fields, S. Car. (Ell.) to E. Fla. St. diffuse, 1 to 2f long. Lfts. 6" long. Fls. small, 

 yello-w. 



19. STYLOSAR'THES, Swartz. (Gr. ffrCAoc, a style, dvOog.) Flow- 

 ers of two kinds. $ Calyx somewhat bilabiate, bibraoteolate at base, 

 the tube very long and slender, with the corolla inserted on its throat ; 

 vexillum very broad; stamens 10, monadelphous ; ovary always sterile, 

 with a very long style. ¥ Calyx and corolla ; ovary between 2 

 braeteoles ; legume 1 to 2-jointed, uncinate with the short, persistent 

 style. — Lvs. pinnatoly trifoliate. 



S. elatior Swartz. Pencil Flowek. St. pubescent on one side ; lfts. lanceolate, 

 smooth, acute at each end ; bracts lanceolate, ciliate ; spikes 3 to 4-flowered ; .lo- 

 mcnt l-seeded (lower joint abortive). — !(. Dry, gravelly woods. Long Isl. to Fla. 

 and Ark. St. mostly erect, branched. If in hight, remarkable for being densely 

 pubescent on that side only which is opposite the insertion of each lea^ while the 

 other side is smooth. Lvs. ou short stalks ; lfts. V or more in length. Bracts 

 fringed with yellow bristles. Fls. yellow. Jl., Aug. 



20 AR'ACHIS, Willd. Pea Nut. (Lat. aracos, used by Pliny to 

 designate some subterranean plant.) Calyx bilabiate ; corolla resupin- 

 ate, stamens monadelphous, legume gibbous at base, coriaceous, veiny, 

 turgid, and indehiseent, the joints not separating. — A S. American 

 genus with equally pinnate lvs. and yellow lis. 



A. hypog^a Willd. Nearly glabrous ; lfts. 2 pairs, oval or roundish, cune- 

 ate at base ; stip. entire, lance-subulate, as long as the lfts ; fruit subterranean.— 

 Cultivated in N. Car. and S. and W. as easily ag the sweet potato, and is very 

 prolific. The specific name (uiro, yri, under ground) alludes to the curious habit 

 of forcing its ovaries, after flowering, into the BoU aud there ripening them. 



21. COROPJIL'LA, L. (Lat. corona, a crown ; from the inflores- 

 i;once.) Calyx bilabiate, petals ungniculate ; loment somewhat terete, 

 jointed ; seeds mostly cylindrical. — Mostly shrubs. Lvs. unequally pin- 

 nate. Fls. in simple, pedunculate umbels. 



1 C. Emerus L. Scorpion Senna. St. woody, angular ; ped. about 3-flowered ; 

 claws of the petals about thrice longer than the calyx. — A beautiful, free flower- 

 ing shrub from France. St. about 3f high, square, with opposite branches. Lfts. 

 about 7, broadly oboordato. Fls. rose-colored, collected in Uttle tufta on the ecda 

 of the subaxillary peduncles. Apr., Jn. j- 



