364 LEGUMINOSiE. Desmodium. 



uncinate-pubescent, of 3-5 triangular-rhomboid joints. — DC. ! I. c. ; Dar- 

 lingt. ! I. c. Hedysarum paniculatum, Linn. ! spec. 2. p. 748 ; Pursh ! 

 I. c. ; WiiUt. ! I. c. ; Ell. I. c. 



p. an gusti folium : leaves all narrower. 



y. jnibens : slcni puberulent ; leaves oblong-lanceolate, rather rigid, pu- 

 bescent, especially beneath. 



Borders of woods, da. Canada ! to Florida ! Louisiana ! and Texas ! 0. 

 Southern and Western States I y. Tatnpa Bay, Florida, Dr. Burrows ! 

 Western Louisiana, Dr. Hale! July-Aug. — Stern 2-3 feet high. Leaflets 

 1-3 inches long, minutely ])ubescent with appressed hairs on both sides. 

 Flowers purple. Legumes rather large ; the joints oblong, distinctly angled 

 on the back, so as to form an inequilateral rhomboid. 



19. D. rot undi folium (DC.) : stem prostrate, liirsute ; leaflets orbicular, pu- 

 bescent ; stipules large, broadly ovate, acuminate, reflexed, persistent ; 

 racemes axillary and terminal ; bracts resembling the stipules ; calyx about 

 equally 4-cleft, the upper segment 2-toothed, the lower a little longest ; 

 legumes minutely hispid, almost equally sinuate on both edges, with 3-5 

 rhomboid-oval joints. — DC. ! I. c. ; Darlingt. ! Ji. Cest.p. 330. Hedvsarum 

 rotundifohum, 'Michr.! ft. 2. p. 12; Pursh! fi". 2. p. 484; Ell. sk. 2. p. 

 213 ; Bigel.fl. Bost. eel. 2. p. 21 A. 



In di-y soil. New England States ! and New York ! to Georgia ! Alabama ! 

 and Louisiana ! Aug. — Stem somewhat branched, 2-4 feet in length, angu- 

 lar. Leaflets large, usually liairy on both sides and ciliate ; the terminal one 

 largest, and slightly rhomboid. Racemes rather few-flowered ; the terminal 

 ones often panicled. Corolla bright purple and violet. Legumes about an 

 inch long. — Elliott and Dr. Darlington, on the authority of Muhlenberg, in- 

 correctly consider this as the Hedysarum canescens of Willdenow ; concern- 

 ing which see note at the end of the genus. 



20. D. liumifusHm (Beck) : stem procumbent, striate, almost glabrous ; 

 leaflets oval, slightly pubescent ; stii)ules ovate-lanceolate, persistent : ra- 

 cemes axillary and terminal ; bracts resembling the stipules ; ui)per lip of 

 the calyx deeply 2-toothed ; teeth of the lower lip very acute, the middle one 

 prolonged ; legumes minutely hispid, slightly sinuate or repand along the su- 

 perior margin, on a short stipe, of 2-4 obtusely triangidar joints. — Beclc, hot. 

 p. 86. Hedysarum humifusum, Muhl. cat. ; Bigel. ! fi. Bost. ed. 2. p. 274. 



Massachusetts, near Boston, Bigelow .' Dr. Book ! Near -Lancaster, 

 Pennsylvania, and Carolina (?), Muhlenberg. August. — Eesembles D. ro- 

 tundifolium, l)ut the whole plant is much smoother, the leaves oval, the 

 stipules and legumes also difltirent. Muhlenberg, in his unpublished Flora 

 Lancastriensis, remarks that he has H. humifusum both from New England 

 and Carolina ; but his description does not perfectly agree with the plant from 

 Massachusetts, which alone we have seen. 



21. D. lineatum (DC.) : stem angled and finely striate, slightly pubescent; 

 leaves on short petioles ; leaflets (small) orbicular, nearly glabrous ; stipules 

 triangular-subulate, small, persistent ; flowers mostl}^ in terminal elongated 

 loose panicles ; upper lip of the calyx 2-cleft, the middle segment of the 

 lower lip longest ; legumes (small) sessile, minutely hispid, of about 3 nearly 

 orbicular rather oblique joints. — DC. prodr. 2.^;. '330; Hook.! compan. to 

 hot. mag. \. p. 23. Hedvsarum lineatum, Michx. ! fl. 2. p. 72 ; Ell. sk. 2. 

 p. 214. 



Carolina, il'/ic/iaM.r/ Virginia, Mr. Curtis! Middle Florida, D/-. vl?e.r- 

 ander ! Dr. Chapman ! Alabama, ilJr. Buckley ! Louisiana, Drummond ! 

 Dr. Hale ! — This very disthict species derives its name from the finely stri- 

 ate stems. The leaves resemble those of D. rotundifolium, but are" very 

 nmch smaller than the ordinary forms of that species. 



