230 XLVII. LEGUMINOS^. Hedysarum, 



between 2 bracteoles ; legume 1 — 2-jointed, uncinate with the short, 

 persistent style. — Lvs. pinnatdy trifoliate. 



S. ELATiOR. Swartz. (Tfifolium biflorum. Linn.) Pencil Floioi^. 



St. pubescent on one side; Ifts. lanceolate, smooth, acute at each end; 

 bracts lanceolate, ciliate; spikes 3^-4-flowered ; lonient 1 -seeded (lower joint 

 abortive).— 1|. Dry, gravelly woods. Long Isl. to Flor. and Ark. Stem mostly 

 erect, branched, If in height, remarkable for being densely pubescent on that 

 side only which is opposite the insertion of each leaf, while the other side is 

 smooth. Leaves on short stalks, leaflets 1' or more in length. Bracts fringed 

 with 3'ellow bristles. Flowers yellow. Jl. Aug. 



24. CO RON ILL A. 



Lat. corona, a crown; from the resemblance of the inflorescence. 



Calyx bilabiate ; petals unguiculate ; loment somewhat terete, 

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

 pinnate. Fls. in simple., j)edunculate umbels. 



1. C. Emerus. Scorpion Senna.— St. woody, angular ; pcd. about 3-flowered ; 

 claws of the petals about thrice as long as the calyx.— A beautiful, free-flowering 

 shrub from France. Stem about 3f high, .^.quare, with opposite branches. Leaf- 

 lets about 7, broadly obcordate. Flowers rose-colored, collected in little tufts 

 on the ends of the subaxillary peduncles. Apr. — Jn. f 



2. C. VARiA. Purple Coronilla.—St. herbaceous, erect, smooth, branching; 

 lvs. sessile, smooth; Ifts. 11—19. all subsessile, oblong, obtuse; umbels long- 

 pedunculate, 10— 15-flowered ; jis. pale purple.— An elegant European species, 

 2 — 4f high, crowned with many hemispherical umbels 1' diam. JL— Sept. f 



25. ^SCHYNOMENE. 



Gr. aia)(yvojiai, to be modest; alluding to its sensitive property. 



Calyx bilabiate, bibracteolate ; upper lip bifid, lower trifid ; vexil- 

 lum roundish ; keel petals boat-shaped, distinct at base ; stamens 

 diadelphous, 5 in each set ; legume exserted, composed of several 

 truncated, separable, 1 -seeded joints. — Lvs. odd-pinnate. Slip, semi- 

 sagittate. Rac. axillary. 



JE. HispiDA. Willd. (Hedysarum Virginicum. Linn.) 

 St. erect, scabrous-pubescent, as well as the petioles, peduncles, and 

 legumes ; Ifts. very smooth and numerous (often as many as 49, Nutt.), linear, 

 obtuse ; stip. ovate, acuminate ; rac. 3— 5-flowered ; lovicjit compressed, 6 — 9- 

 jointed.— (f) Marshes, Penn. to Flor. Stem 2— 3f high. Leaflets about f long. 

 Racemes usually bearing a leaf Flowers yellow, reddish outside. Legume 

 2' long, sinuate on one side. Aug. 



26. HE-DYSARUM. 



Gr. rjSvs, sweet, apoi^a, smell; some of the species are fragrant. 



Calyx cleft into 5, linear-subulate, siibequal segments ; keel ob- 

 liquely truncate, longer than the wings : stamens diadelphous (9 & 1), 

 and with the style abruptly bent near the summit ; legume (loment) 

 of several 1-seeded joints connected by their middle. — % 3Iost I y herba- 

 ceous. Lvs. unequally pinnate. 



H. BORE.lLE. Nutt. Northern Hedusarum. 



St. erect; lis. .subsessile, of G— 10 pairs of oblong, smooth ish leaflets; 

 5<?>. united, sheathing, with subulate points ; rac. spicate, on long poduncles; 

 fls. numerous, deflexed ; cat. tcelJi short, the lowest longest; ked long.T than the 

 banner or wings; >/.'/As of the leoinnr 1—4, fl:it, suhorbiculnr, rugos>reticu- 

 late.— On the prncipitous "sides of Willoughbv iMt. W.'stmore, Vt. 500i above 

 the lake below ! N. to Hudson's Bav. Stem rigid, I— 2f high, veiy leafy. Leaf- 

 lets 5—8'' by 2—4", obtuse-mucronulate. R.^cemcs 2 — 1' long, on rigid pedun- 

 cles 3 — 5'. " Flowers large and hand.some, violet-purple. Jn. Jl. 



