306 Order 46.— LBGUMINOS^. 



trate, slender, 1 to 2f long. Lts. on long petioles; Iftg. elliptlo-oblong, acute at 

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

 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. (Gr. ahxyvofiai, to be modest; alluding 

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

 bifid, lower trifid ; vexillum roundisb ; keel petals boat-shaped, distiuct 

 at base ; stamens diadelphous, 5 in eacb set ; legume exsorted, com- 

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

 Stip. semi-sagittate. Eao. axillary. 



1 .Si. hispida Wilia. Si. erect, somewhat scabrous, as well as the petioles, pe- 

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

 tuse; stip. ovate, acuminate; rac. 3 to 6-flowered; loment compressed, 6 to 9-joini- 

 ed— -3) Marshes, Penn. to Fla. and la. (Hale). St. 2 to 3f high. Lfts. about j' 

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

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



2 JSi. visoidula Mx. Slender, procumbent, viscidly pubescent; lfts. 7 to lli 

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

 biate, 3 lower teeth nearly equal ; pod, 2 or S-jointed, deeply lobed.— -<X) Sandy 

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

 yellow. 



19. STYLOSAN'THES, Swartz. (Gr. ffrCAof, a style, dvOog.) Flow- 

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

 the tnbe 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 

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

 style. — Lvs. pinnately trifoliate. 



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

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

 ment 1-seeded (lower joint abortive). — 11 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 leaf, while the 

 other side is smooth. Lvs. on short stalks ; lfts. 1' 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 indehiscent, the joints not separating. — A S. American 

 genus with equally pinnate lvs. and yellow fls. 



A. hypog^a "Wmd. Nearly glabrous ; Ifta. 2 pairs, oval or roundish, cune- 

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

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

 prohfic. The speoiflo name (vno, yjj, under ground) alludes to the curious labit 

 of forcing its ovaries, after flowering, into the soil and there ripening them. 



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

 cence.) Calyx bilabiate, petals unguiculate ; 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, aagiAac; ped. dboviZ-flowered; 



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



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



about 7, broadly oboordate. Fls. rose-colored, collected in little tufla on the ends 



of the subaxiUary peduncles. Apr., Jn. + 



