86 DICOTYLEDONOUS PLANTS. 



14. D. rotundifolium DC Cand. : stem prostrate, hirsute ; leaves ter- 

 nate ; leafets suborbicular, hairy ; stipules roundish-cordate, reflexed ; 

 racemes axillary, paniculate ; joints of the legume subrhomboidal, re- 

 ticulate, scabrous. Hedysarum rotundifolium. Mich.-H. canesccns.Wittd. 



HAB. Rocky woods. N. Y. to Car. Aug. II. Racemes few- 

 flowered. Flowers purple. The southern plant seems to differ 

 from the northern, and may prove distinct. 



15. D. humifusum Beck : stem prostrate, smooth ; leaves ternate ; 

 leafets ovate, slightly hairy ; racemes terminal, elongated ; joints of 

 the legume subrhomboidal. Hedysarum humifusum. Muhl. Torr. Big. 



HAB. Woods. Mass. Penn. to Car. MuhL Aug. If.. Resem- 

 bles the last, but is smoother and has the leafets oval or ovate 

 and subacute. Perhaps only a variety. 



1C. HEDYSARUM. DC Cand. 



Calyx 5-cleft ; segments linear-subulate, nearly equal. 

 Standard large. Keel obliquely truncate ; wings much short- 

 er than the keel. Stamens diadelphous (9 and 1.) Legume 

 with many joints ; joints compressed, roundish, 1-seeded. 



DiadeJphia. Decandria. 



}L loretde Nutt. : stem subdecumbent ; leaves pinnate ; leafets (7 or 

 8 pairs) oblong-ovate, partly villose ; stipules sheathing, subulate j ra- 

 cemes on long peduncles ', legumes with smooth, rugose, roundish 

 joints. //. alpinum Mich. ? 



HAB. Mountains. Can. and Penn. JMidt. AV. to Fort Mandan, 

 on the Missouri. Nutt. June, July. If. Flowers numerous, 

 purple. 



17. LESPEDEZA. Mich. 



Calyx with bracts at base, 5-parted ; segments nearly 

 equal. Carol papilionaceous. Keel transversely obtuse. Sta~ 

 metis diadelphous (9 and 1.) Legume lenticular, compressed, 

 flat, not opening, 1-seeded, unarmed. Leaves ternate. 



Diadelphia. Decandria. 



1. L. rctictdata Pers. : stem erect, simple, nearly smooth ; leafets 

 oblong-linear, obtuse, mucronate, hairy beneath ; fascicles of flowers 

 subsessile, numerous ; axillary ones subracemose ; legume ovate, re- 

 ticulate, acute, longer than the calyx. L. scssilifora, var. Mich. L. an- 

 gustifolia. Raf. Hedysarum reticulatum Mnhi. in H'illd. 



HAB. Dry woods. N. J. W. to 111. Aug. U.Stem 2 feet 

 high, slender, never branched. Leafets 2 lines broad. Floircrs 

 violet. 



2. L. sessiliflora Nutt. : stem erect, somewhat branched ; leaves on 

 short petioles ; leafets oblong-oval, obtuse ; fascicles of flowers sub- 

 sessile ; axillary ones partly racemose; legume naked, acute. Hcdy- 

 sarum sessiliftorum Lam. 



