306 ORDER 46. LEGUMLNOS^E. 



tratc, slender, 1 to 2f long. Lvs. oa long petioles; Ids. elliptic-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 yelknv. Leg. 

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



18. ^ESCHYNOM'ENE, L. (Gr. aiaxvvofiai, 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 exserted, com- 

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

 Stip. semi-sagittate. Rac. axillary. 



1 JE. hispida Willd. St. erect, somewhat scabrous, as well as the petioles, pe- 

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

 tuse; slip, ovate, acuminate; rac. 3 to 5-flowered; lament compressed, 6 to 9-joint' 

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

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

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



2 2B. viscidula MX. Slender, procumbent, viscidly pubescent; Ifts. 7 to Hi 

 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. <D Sandy 

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

 yellow. 



19. STYLOSAN'THES, Swartz. (Gr. orvXoq, a style, dvBog.) Flow- 

 ers of two kinds. $ Calyx somewhat bilabiate, bibracteolate 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 

 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 ; Ifts. lanceolate, 

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

 in ent 1 -seeded (lower joint abortive). 14 Dry, gravelly woods, Long Isl. to Fla. 

 and Ark. St. mostly erect, branched, If in bight, 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 ; Ifts. L' 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 Ivs. and yellow fis. 



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

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

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

 prolific. Tho specific name (OTTO, -yr), under ground) alludes to the curious habit 

 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, angular; ped. about ^-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 obcordate. Fls. rose-colored, collected in little tufts on the ends 

 of the subaxillary peduncles. Apr., Ja. f 



