Ill' m:(;iminos.k. (itlsr famii.v.) 



f>. D. CUSpidatum, Tnrr. &(!ray. SUiii sniDotli.trcct ; loavfs smooth, 

 oviito or l:iiii(i>l:itf-ovatt-, aiuiiiinate; jtanirle mostly siiii]ile, elongated; How- 

 crs anil bracts lar^e ; le>;;nme 4-G-jointe(l. the joints rhomhic-oldonp;, eon- 

 necteil l>y a i>roail neck. — Dry open woods. .Inly- Aiij^u.st. — Stem ."3^-5° 

 high. Leali.is .5 - ">' l..ng. Legume 1 i'-'i' long. 



7. D. viridiflorum, Beck, stem stout, tomentose, rough above ; leaves 

 large; leaHets ovate or roundish, obtuse, very mugh above, jiale ami velvety 

 beneath; stijjules ovate, acuminate, rather snuill ; panicle large, lealless ; 

 legume 3-4-jointed, on a stipe twice as long as the calyx, the joints half 

 orbicular, connected by a narrow neck. — Rich open woods. August. — Stem 

 3°-4°high. Leaflets 2' -4' long. Corolla turning greenish. 



8. D. OChroleucum, M. A.Curtis. Stems decumbent, hairy ; leaflets 

 smoothisli, ovate, reticulate ; stipules large, ovate ; racemes elongated ; corolla 

 whitish; legumes twisted, 2-4-joiuted, the large joints rhomboid, smooth. — 

 North Carolina, and northward. 



9. D. humifusum, Beck. Nearly glabrous; stem prostrate; leaflets 

 ovate, mostly obtuse, thin, faintly veined, I'-U' long; stipules small, lance- 

 olate; flowers small, purple; joints of the legume 3-4, triangular, minutely 

 scabrous. — ( )pcn wooils, Tennessee, and northward. 



10. D. rotundifolium, DC. Stem long, trailing, hairy; leaflets or- 

 bicular, pubescent ; stipules ovate, large, reflexed ; racemes simple, the termi- 

 nal ones panided ; lobes of the calyx longer than the tube ; legume 2 - 4-jointed, 

 very adhesive, the large joints half-rhombic. — Dry open woods. August. — 

 Stem 3° -5° long. Flowers showy, occasionally yellowish white. 



* * Stipules subulate, deciduous: legume 3-5-jointed, nearly strair/ht on the 

 upper suture, ike joints triangular, rarehj rounded on the lower suture. 



11. D. Canadense, DC. Stem erect, hairy; leaves short-petioled ; 

 leaflets oblong-lanceolate, more or less hairy; panicle leafy; flowers and 

 bracts large; legume with 3-4 rather large obtusely 3-angled joints. — Dry 

 woods in the upper districts. August. — Stem 2° -3° high, furrowed. Upper 

 leaves subsessile. 



12. D. Dillenii, Darl. Stem erect, furrowed, hairy; \eaflets oblong or 

 ovate-oblong, obtuse, smoothish above, paler and pubescent beneath ; panicle 

 large, leafless, rough ; joints of the legume 3-4, triangular. — Open woods, 

 common. August. — Stem 2°-3° high. Leaflets l'-2' long. Bracts and 

 flowers small. 



13. D. glabellum, DC. Stem erect, nearly glabrous; leaflets small, 

 ovate, obtuse, scabrous-pubescent on both sides ; joints of the legume about 4, 

 triangular, minutely hispid. — In shady pla-^es, North and South Carolina. — 

 Resembles D. Marilandicum in foliage and D. paniculatum in fruit. 



14. D. laevigatum, DC. Stem smooth, terete ; leaflets thick, ovate, 

 obtuse, smooth, or slightly pubescent and paler beneath ; panicle leafless, 

 rough; joints of the legume 3-4, triangular. (H. rhombifolium. Ell.) — 

 Dry rich soil. August. — Stem 2° -4° high. Leaflets V-2' long, the lateral 

 ones occasionally wanting. 



