tooth lanceolate, longer than tire rather obtuse triangular lateral ones; legumes
with 2-3 hispid somewhat semi-orbicular joints.—Darlingt.! fi. Cest.p. 412.
D. obtusum, DC. prodr. 2.p. 329 ; Beck, bot.p. 84. Hedysarum Marilandi-
cum, Linn, (fide herb ! Sf pi. Gronov. !) spec. 2. p. 748, excl. syn. Dill., not
of Willd. and later authors. H. obtusmn, Pursh ! ft. 2. p. 482: Ell. sk. 2.
р. 212 ; scarcely of Willd.
Dry hills and woodlands, New England States! and New York! to Florida
! Louisiana ! and Alabama! July-Aug.—Stem 2-3 feet high, striate,
glabrous or with a few scattered hairs. Leaflets scarcely an inch in length,
glabrous or rarely with a few hairs on the veins beneath : petioles slender,
always about the length of the lateral leaflets. Corolla small, violet-purple.
Legumes small, sometimes of a single joint, but more frequently with 3 ; the
upper margin distinctly sinuate— This species is doubtless comprised in the
Hedysarum obtusum, and is well known to American botanists under that
name, but the specimen in Willtlenow's own herbarium seems to be rather a
smoother variety of the following species. This however 'is less important,
as the original name of Linnaeus must be adopted.
13. D. ciliare (DC.) : stem erect, mostly simple, rather slender, hairy;
leaves crowded, on very short hairy petioles; leaflets (small) roundish-
ovate or oval, obtuse, rather coriaceous, pubescent and somewhat ciliate;
stipules linear-subulate, caducous; lower branches of the panicle mostly
elongated ; upper lip of the hairy calyx shortest, usually entire; the
lower tooth lanceolate and longest; legumes with 2—3 semi-orbicular or
obliquely roundish-obovate hispid joints.—DC. ! prodr. 2. p. 330 ; Beck, l.
с . ; Darlingt.fi. Cest.p. 413. Hedysarum ciliare, Willd. ! spec. 3. p. 1190;
Pursh, l. c. ; Nutt.! gen. 2 .p. 109 ; Ell. sk. 2. p. 212. H. coriaceum,
Poif. suppl. 1. p. 416 ?
a. leaflets roundish.—Desmodium obtusum, DC. ! 1. c. Hedysarum
obtusum, Willd.! ex spec. . ~
/?. leaflets oblong, particularly. the terminal one; leaves less crowded.—
Hedysarum ciliare var. oblongifolium, Ell. 1. c.
Dry hills and copses, New England States! and New York! to Florida!
Louisiana! and Texas ! July-Aug.—Plant rather stouter than the preceding
species; the stems usually quite hairy, but sometimes rather smooth;
the leaflets about the same size (or in /?. rather larger), but always longer
than the hairy petiole. Panicle scabrous-puberulent with uncinate hairs, as
in D. Marilandicum; the lower racemes much elongated.—The flowers and
fruit are wholly similar to the preceding species, from which there is scarcely
any constant distinguishing character, except the very short hairy petioles. 14 *
14. D. rigidum (DC.) : stem erect, branched, clothed with a rough pubescence
; leaflets ovate-oblong, obtuse, reticulated, ciliate, scabrous above,
hairy beneath, the lateral ones smallest, much longer than the hairy petiole ;
stipules ovate-lanceolate, acuminate, ciliate, caducous; racemes paniculate,
erect, very long; segments of the calyx acute, the lower one longest;
legumes of 2-3 sejni-obovate or obliquely oval hispid joints.—DC. 1. c .;
Darlingt. ! fi. Cest.p. 413. Hedysarum rigidum, Ell. sk. 3. p. 215.
Dry hill sides and open woodlands. Near Boston, Dr. Boott! and Southern
part of the State of New York! and New Jersey ! to Georgia! Tennessee,
Dr. Currey! Arkansas, Dr. Leavenworth! Western Louisiana, Dr. Hale!
Aug.-Sept.—Plant somewhat canescent. Stem 2-3 feet high, striate, usually
with numerous long erect and rather rigid branches. Leaves a little coriaceous
: leaflets 1—3 inches long.—The fruit scarcely differs from that of D.
ciliare, from which the smaller varieties are, as Dr. Darlington remarks, not
easily distinguished; on the other hand, the larger forms approach both D.
Canadense and Dillenii; but the legumes are very different from either.
0Q\/)J'OJ
15. D. sessilifolium: stem erect, rather stout, tomentose-pubescent; leaves
sessile ; leaflets linear or linear-oblong, rather coriaceous, obtuse at each end,
reticulated, scabrous above, tomentose with a soft pubescence beneath ;
stipules subulate, somewhat persistent; racemes paniculate, much elongated ;
pedicels very short; bracts minute; upper lip of the calyx slightly emargi-
nate ; the lower tooth a little longer than the triangular lateral ones; legumes
* small, nearly sessile, of 2-3 somewhat semi-orbicular hispid joints.—Hedysarum
sessilifolium, Torr.! mss. Sf in Curtis, cat. pi. Wilmingt. excl. 0.
Borders of woods and copses, Michigan ! Ohio! Kentucky! Illinois! Arkansas
! & Texas! Aug.—Stem 2—3 feet high, striate, simple, or paniculate
at the summit. Leaflets 1^—2^ inches in length and 4—5 lines wide. Flowers
crowded on the long and simple branches of the panicle, small. Legumes
about half an inch long, the joints slightly convex on the back.—A very distinct
species!
16. D. tenuifolium: stem erect, slender, branching, scabrous-pubescent
above ; leaves on short petioles, the upper ones often sessile ; leaflets narrowly
linear, obtuse, coriaceous, reticulated, very glabrous above, slightly pubescent
beneath; stipules subulate, rather persistent; panicles elongated, very
scabrous ; bracts ovate, acute, very small; upper lip of the calyx slightly
emarginate, about the length of the nearly equal lower teeth'; legumes not
stipitate, of 2-3 very small semi-oval or obliquely oval hispid joints.—Hedysarum
sessilifolium 0. angustifolium, Torr.! in Curtis, cat. Wilmington
plants, p. 123.
In shady sandy places, Wilmington,. North Carolina, Mr. Curtis ! Florida,
Dr. Chapman! Alabama, Mr. Buckley! Western Louisiana, Dr.
Hale ! Aug.-Sept.—-Stem 2-3 feet high, with virgate branches. Lower
leaves 2—3 or even 4 inches long, and about 2 lines wide; the upper ones
shorter. Flowers smaller than in any other N. American species. Joints
of the legumes less than two lines in length (slightly larger when a
single one ripens), convex on the back.—This species greatly resembles D.
strictum, and is distinguished by no essential character, excepting the size
and form of the joints of the legume, which are only half as large : they are
similar to those of D. sessilifolium, hut are still smaller.
17. D. strictum (DC.): stem erect, mostly simple, strict and slender, glabrous
or scabrous-puberulent; leaves on distinct petioles ; leaflets narrowly linear,
elongated, rather obtuse, mucronulate, coriaceous, reticulated, nearly glabrous
; stipules subulate, rather persistent; panicle virgate, few-flowered; the
pedicels very slender; bracts lanceolate; upper lip of the calyx slightly
emarginate, the lower tooth longest; legume somewhat stipitate, uncinate-
pubescent, 1—3-jointed ; the joints semi-obovate and slightly concave on the
back.—DC. prodr. 2. p. 329. Hedysarum strictum, Pursh ! fi. 2. p . 483 ;
Nutt. ! gen. 2. p. 109. H. paniculatum, Michx. ! fi. 2. p. 74.
In pine woods and barrens, New Jersey! to Florida! Alabama ! and
Louisiana! July-Sept.—Stem 2-4 feet high, straight, very slender, often
branching towards the summit; the branches and racemes often very scabrous
pubescent. Leaves l i - 3 inches long, and only 2-3 lines wide, rigid.
Flowers small. Legume often ripening but a single rather large joint.—In
a specimen from Dr. Chapman, one of the stipelles is developed into a well-
formed leaflet. We have noticed the same thing in D. Canadense.
18. D. paniculatum (DC.) : stem erect, slender, and, with the petiolate
leaves, nearly glabrous; leaflets membranaceous, oblong-lanceolate or sometimes
linear-lanceolate, rather obtuse, the.lower ones often oval-oblong;
stipules subulate, deciduous; racemes paniculate, the pedicels long and
slender; bracts.lanceolate, hairy; upper lip of the calyx emarginate; tire
lower tooth much longest; legume on a short stipe, straight, minutely