1 54, L^EGUMINOS^. [Desmodiunu 



pistil; Jiff. 3, Pistil ; Jiff^ 4, Raceme, with fruit x-^-naiural size. Fig, 5, Section of a leg^ume ; Jig. 6, Seed : 

 — all but ^ff. 4 more or less magnified. 



Trie. III. HEDYSAREiE, DC. 



16. DESMODIUM. DC. 



Col. basi bibracteolatus ad medium obscure bilabiatusj labio superiore bifido inferiore 

 tripartite. Cor, papilionacea ; vexillo subrotundo, carina obtusa non truncata, alts carina 

 longioribus. Stamina diadelpha (9 et 1) filamentis subpersistentibus. Legumen constans 

 articulis plurimis ad maturitatem secedentibus compressis monospermis membranaceis 



r 



coriaceisve, non aut vix dehiscentibus. — Herbse aut sufFrutices plerique (Bquinoctiales, 

 Folia nunc trifoliolata seu \-juga cum impart, nunc simplicia dicta nempe ad impar foliolulum 

 redvjcta ideo unifoliolata. Stipellte 2 ad basin folioli extremi, 1 ad quodque laterale. Racemi 

 terminales smpius laxL Pedicelli 1 aut 3 ex hractearum axillis orti Jiliformes, \-flori, 

 ^Flores purpurei ccervlei aut albi, minores quam in Hedysaro. DC, 



(Sect. Thi'foi.ioi.at: a^ Jbliis pinnatimB-JbiioIatis^ foliolo impari cmteris parum majore. DC) 



1. Z). canadense; caule erecto pilosiusculo striato, foliolis oblongo-lanceolatis glabri- 

 usculis, stipulis lineari-subulatis, racemis lateralibus terminalib usque simplicibus vel 

 paniculatis, bracteis lanceolatis, leguminis articulis 4—5 rotundato-triangularibus pubes- 

 centi-hispidis. — De Cand. Prodr. v. 2. p. 328. — Hedysarum canadense. Linn. Sp. PL p, 

 1054. Pursh, Fl. Am. v. 2, p. 481. Elliott, Carol v. 2. p. 214. Bigel Fl. Bost ed. 2. p. 275. 



v3. minor; foliolis ellipticis. Hedysarum ciliare? Pursk, Nutt, 



Hab. Throughout Canada, as far as Norway-House, in lat 54°. — Flowers smaJL Leajlets variable; 

 in a., 2-3 inches long, broadly lanceolate and gradually acumiDate; in /S. elliptical; and this latter state 

 agrees very well with the character of Hedysarum ciliare, in Pursh and Nuttall's Floras. — The Iledysarurri 

 paniculatum, agajn, appears to be hardly distinct from the present species, 



■t 



2. D. bracteosum ; caule erecto glabro, foliolis oblongo-ovalibus acuminatis glabris, 

 stipulis subulatis, racemo terminal! sparsifloro, bracteis ovatis acuminatis striatis glabris, 

 leguminis articulis subovalibus. De Cand. Prodr. v. 2. p. 329. — Hedysarum bracteosum. 

 Mich. Am. v. 2, p. 73. Pursh, FL Am, v, 2. p. 482. Elliott, Carol v, 2. p. 213. — ^. cuspi- 

 datum ; foliolis margine scabris, stipulis ovato-lanceolatis, leguminis articulis reticulatis 

 glabris margine pubescentibus. DC, — Hedysarum cuspidatum. Willd, — Pursh, Fl. Am, 

 ,v. 2. p, 483, 



Hab. a. Near Fort-Erie, rare ; S. near Queenstown, on the Niagara. Douglas, 



3. D, acuminatum; caule erecto simplici parce pubescente, foliis longissime petiolatis, 

 foliolis (amplis) tenui-membranaceis rotundato-ovatis anguste acuminatis subpilosis ter- 

 minali latissimo longe petiolulato, pedunculo longissimo, panicula elongata subsimplici 

 pauciflora, leguminis stipitati articulis subtribus obtuse triangular ib us pubescentibus 

 De Cand. Prodr, v, 2, p. 329. — Hedysarum acuminatum. Mich, Am, v. 2, p. 72. Pursh, 

 Fl Am, V, 2, p, 483. Elliott, Carol v, 2. p, 209. Bigel Fl. Bost, ed. 2, p, 275. 



Hab. Upper Canada, Lake Huron. Dr. Todd. 



4. D. nudiflorum : caule erecto simnlici xrlabriusculo. foliolis lato-ovatis acuminatis. 



