LEGUMINOS^. 81 



terminal, very long, naked ; legume with 3—4 roundish triangular very 

 hispid joints. Hedysarum viridijiorum Linn. Ell. not of Pursk. 



Woods. N. Y. to Flor. July. %. — Stem 3 — 4 feet high, very scabrous to- 

 wards the summit. Leaves very scabrous on the upper surface, clothed with a 

 velvet-like tomentum on the under. Flowers purple within, greenish without. 



Villotis-leaved Desmodium. 



6. D. cUiare D. C. : stem erect, rather slender, hairy ; leaves crowded, 

 on short hairy petioles ; leafets small, ovate or oval, obtuse, subcoriaceous, 

 ciUate ; stipules subulate-linear ; racemes paniculate, terminal ; legume 

 with 2 or 3 semiorbicular hispid joints. Hedysarum ciliare WiUd. 



Woods. N. Y. to Flor. W. to Texas. July, Aug. %.—Stem about 2 feet 

 high. Resembles H. Marylandicum, but differs in having the petioles short and 

 hairy. Hairy Small-leaved Desmodium. 



7. D. rigldum D. C. : stem erect, branching, rough-pubescent ; leafets " 

 ovate-oblong, rather obtuse, reticulate, ciliate, scabrous above, hairy be- 

 neath ; stipules ovate-lanceolate, acuminate ; racemes paniculate, erect, 

 very long ; legumes with 2 — 3 semiorbicular or oval hispid joints. Hedy- 

 sarum rigidum Ell. 



Dry woods. Mass. and N. Y. to Geor. W. to Ark. Aug. %.—Stem 2—3 

 feet high. Leafets 1 — 3 inches long, somewhat coriaceous. Flowers small, pur- 

 ple. It sometimes closely resembles D. ciliare. Rigid Desmodium. 



8. D. IcBvigatum D. C. : stem simple, erect, smooth, somewhat glaucous; 

 leaves ternate, on long petioles ; leafets ovate, acute ; panicle terminal ; flow- 

 ers in pairs, on long pedicels ; bracts ovate, acute, shorter than the flower 

 buds ; lower segment of the calyx elongated ; joints of the legume triangu- 

 lar. Hedysarum Icevigatum NuU. 



Woods. N. Y. and N. J. ; rare. Aug. %■. — Stem 2—4 feet high. Flowers 

 purple. The smoothest of the North American species. Smooth Desmodium. 



9. D. cuspidatum Torr. tf* Gr. : stem erect, smooth ; leafets ovate or 

 lanceolate-ovate* acuminate, smooth ; stipules lanceolate, acuminate ; pan- 

 icle terminal, elongated, rather slender; bracts ovate, acuminate, striate, 

 smooth ; legume with 4 — 6 triangular-oblong reticulated sparingly hispid 

 joints. D. bracteosum D. C. Hedysarum cuspidatum Willd. H. brac- 

 teosum Mich. 



Rocky woods. Can. to Flor. W. to Ark. Aug. %.—Stem 3—5 feet high, 

 nearly simple. Leafets 2 — 5 inches long. Flowers in a large open panicle, red- 

 dish-purple. Large-bracted Desmodium. 



10. D. paniculatum D. C. : stem erect, smooth ; leaves ternate ; leafets 

 oblong-lanceolate, rather obtuse, smoothish ; stipules subulate ; panicle ter- 

 minal ; legumes with 3 or 4 rhomboidal pubescent joints. Hedysarum pan- 

 iculatum Linn. 



Dry woods. Can. to Flor. W. to Miss. Aug. %..—Stem 2—3 feet high, 

 slender, often branching. Leafets \ — 3 inches long. Flowers small, purple, in a 

 paniculate raceme. Paniculate Desmodium. 



11. D. strictiLm D. C. : stem stiffly erect, simple, subpubescent ; leaves ter- 

 nate ; leafets sublinear, smooth, reticulate, glaucous beneath ; stipules sub- 

 ulate; panicles terminal, pedunculate, few-flowered; legume incurved, 

 with sublunate-triangular hispid joints. Hedysarum hirtum Pursh. 



Pine barrens. N. J. to Flor. W. to Miss. Aug. %.~Stem slender, very 



4* 



