pistil; fig. 3, Pistil ; fig. 4, Raceme, with fruit :—natural size. Fig. 5, Section of a legume'; fig. 6, Seed :
—all but fig. 4 more or less magnified.
T r i b . III. H e d y s a r e æ . DC.
16. DESMODIUM. DC.
Cal. basi bibracteolatus ad medium obscure bilabiatus, labio superiore bifido inferiore
tripartito. Cor. papilionacea ; vexillo subrotundo, carina obtusa non truncata, alts carina
longioribus. Stamina diadelpha (9 et 1) filamentis subpersistentibus. Legumen cons tans
articulis plurunis ad maturitatem secedentibus compressis monospermis membranaceis
coriaceisve, non aut vix dehiscentibus.—Herbæ aut sufFrutices plerigue oequinoctiales.
Folia nunc trifoliolata seu \-juga cum impari, nunc simplicia dicta nempe ad impar foliolvlum
reducta ideo unifoliolata. Stipellae 2 ad basin folioli extremis 1 ad quodque laterale. Racemi
terminales soepius laxi. Pedicelli 1 aut 3 ex bractearum axillis orti filiformes, 1 -fiori.
Flores purpurei ccerulei aut albi, minores quam in Hedysaro. DC.
( S e c t . T r if o l io l a t a , foliis pinnatim 3-foliolatis, foliolo impari cceterisparum majore. DC.)
1. D. canadense ; caule erecto pilosiusculo striato, foliolis oblongo-lanceolatis glabri-
usculis, stipulis lineari-subulatis, racemis lateralibus terminalibusque simplicibus vel
paniculatis, bracteis lanceolatis, leguininis articulis 4—5 rotundato-triangularibus pubes-
centi-hispidis.—De Cand. Prodr. v. 2. p. 328.—Hedysarum canadense. Linn. Sp. PI. p.
1054. Pursh, FI. Am. v, 2. p. 481. Elliott, Carol v. 2. p. 214. Bigel. Fl. Bost. ed. 2. p. 275.
—ß. minor ; foliolis ellipticis. Hedysarum ciliare ? Pursh, Nutt.
Hab. Throughout Canada, as far as Norway-House, in lat 54°.—Flowers small. Leaflets variable;
in *., 2-3 inches long, broadly lanceolate and gradually acuminate; in ß. elliptical; and this latter state
agrees very well with the character of Hedysarum ciliare, in Pursh and Nuttall’s Floras.—The Hedysarum
paniculatum, again, appears to be hardly distinct from the present species.
2. D. bracteosum; caule erecto glabro, foliolis oblongo-ovalibus acuminatis glabris,
stipulis subulatis, racemo terminali 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, FI. Am. v. 2. p . 482. Elliott, Carol, v. 2. p. 213.—ß. cuspi-
datum ; foliolis margine scabris, stipulis ovato-lanceolatis, leguminis articulis reticulatis
glabris margine pubescentibus. DC.—Hedysarum cuspidatum, Willd.—Pursh, FI. Am.
v. 2. p . 483.
Hab. <*. Near Fort-Erie, rare ; &. 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 terminali
latissimo longe petiolulato, pedunciilo longissimo, panicula elongata subsimplici
pauciflora, legufhinis stipitati articulis subtribus obtuse triangularibus pubescentibus.-^
De Cand. Prodr. v. 2. p . 329.—Hedysarum acuminatum. Mich. Am. v. 2. p. 72. Pursh,
FI. Am. v. 2. p. 483. Elliott, Carol, v. 2. p. 209. Bigel. FI. Bost. ed. 2. p. 275.
Hab. Upper Canada, Lake Huron. Dr. Todd.
4. D. nudiflorum; caule erecto simplici glabriusculo, foliolis lato-ovatis acuminatis,
scapo paniculato glabro radicali caule foliifero altiore, leguminis articulis subrotundo-
triangularibus glabriusculis.—De Cand. Prodr. v. 2. p. 330.—Hedysarum nudiflorum.
Linn. Sp. PI. p. 1056. Pursh, FI. Am. v. 2. p. 483. Elliott, Carol, v. 2. p. 209. Bigel. FI.
Bost. ed. 2. p. 275.
Hab. Canada. About Quebec. Mr. Cleghom.
5. D. pauciflorum; caule decumbente humillimo-filiformi, foliis longissime petiolatis,
foliolis lato-ovatis acuminatis pubescenti-ciliatis terminali rhomboideo, stipulis obsoletis,
racemo terminali pedunculato paucifloro folium vix excedente.—De Cand. Prodr. v. 2.
p. 330.—Hedysarum pauciflorum. Nutt. Gen. v. 2. p. 109.
Hab. Canada. Mr. Goldie.—My specimen of this from Mr. Goldie exactly accords with an original one
in my Herbarium, from Mr. Nuttall. In neither is the panicle shorter, but rather longer, than the leaves.
17. HEDYSARUM. Joum. DC.
Cal. 5-fidus, laciniis lineari-subulatis subaequalibus. Cor. vexillo amplo, carina oblique
truncata, alis carina multo brevioribus. Siam, diadelpha (9 et 1); genitalium fasciculus
abrupte infractus. Legumen constans articulis plurimis compressis monospermis orbicu-
latis lenticularibusve regularibus medio inter se connexis, et ideo ad utramque suturam
convexis.—Herb« aut sufFrutices. Folia impari-pinnata. Pedunculi axillares simplices.
Racemi spicati. Flores majusculi purpurei aFbi aut ochroleuci. DC.
Sect. L eiolobium, leguminum articuli laves, nec echinati, nec (manifests) pilosi. Calycis
lacinioe corolla breviores. DC.
1. H. boreale; caule erecto stricto basi decumbente* foliis subsessilibus, foliolis 8-12-
jugis oblongis subtus pilosiusculis, stipulis coalitis vaginantibus laciniis subulatis, racemis
elongatis longe pedunculatis, floribus numerosis subsecundis subimbricatim reflexis,
vexillo alis carina multo brevioribus, leguminis articulis 3-4 suborbicularibus glabris
pubescentibus ve reticulatis compressis.—Nutt. Gen. v. 2. p. 110. De Cand. Prodr. v. 2.
p. 343.—H. alpinum. Mich. Am. v. 2. p. 74. Pursh, FI. Am. v. 2. p . 484. (var. p.) Rich,
in Frankl. Is* Joum. ed. 2. App. p. 28. (non Linn.)
Hab. Northern Canada. Michaux. Woody and barren grounds of North America, from the Saskatchawan
to the Arctic Circle, Dr. Richardson, and to the Rocky Mountains, in lat. 54°. Drummond. Kotzebue’s
Sound, in Behring’s Strait. Messrs. Lay and Collie.—This is certainly distinct from the Siberian H alpinum,
being greatly taller, with much shorter stipules, nearly sessile leaves, vastly longer peduncles and racemes*,
and smaller, more deflexed flowers.—The “ rugose” appearance noted in the joints of the lomentum of this,
by Mr. Nuttall, and of the following, by Dr. Richardson, appears to be owing to veins or bundles of vessels.
Mr. Drummond observes that the bears are very fond of the roots of this plant.
2. FL. Mackenzii; caulescens, decumbens, foliis pinnatis, foliolis oblongis utrinque
canescenti-pilosis, stipulis vaginantibus, articulis lomenti transversim rugosis pilosis. Rich,
in Frankl. ls£ Journ. ed. 2. App. p. 28.—p. foliis supra ovariisque glabris.—H. boreale ?
Rich, in Frankl. 1st Joum. ed. 1. App. p. 745.
Hab. Barren grounds, north of lat. 64®, as far as the shores of the Arctic Sea. Dr. Richardson, in the 1st
Joum. In the 2d Joum. it was found at the Saskatchawan, about Carlton-House, and thence westward to the
mountains. Drummond. Mr. Douglas found it on the Eagle and Red-Deer HiUs of the Saskatchawan.—
U 2