Legume obliquely ovate or oblong, often falcate, compressed, 1- 2-seeded.
Seeds commonly more or less carunculate.—Usually twining or trailing
perennial herbs, or rarely shrubby plants. Leaves pinnately trifoliolate,
sometimes reduced to a single leaflet, commonly sprinkled (especially beneath)
with resinous atoms. Flowers yellow, racemose, sometimes solitary.
§ 1. Calyx (marcescent) somewhat bilabiate, deeply 4-cleft; segments
subulate, the lowest one longest: hilum and carunculus small: stem
twining.—E urhyncosia, Am.
4 Caribcea (DC.): slightly pubescent; stipules setaceous; leaflets
roundish-rhombic, rather acute, membranaceous, nearly glabrous above
dotted with resinous glands beneath ; racemes filiform, rather longer than
the leaves, 7 15-flowered; flowers (minute) reflexed, remote ; legumes scimitar
shaped, narrowed at the base, reflexed.—DC. prodr. 2. p. 384 R mi-
HP' i C- (acc°rdmg to Nutt.) Glycine Caribcea, “ Jac.q. ic. rar. t.
1p \ o ^ KUnih’ Syn' 4 9o' Gl reflexa) Nutt- gen. 2. p. 115; Ell. sk. 2.
Gr , P aq.UVla! soils> f • Carolina to Florida, and west to Louisiana! and
1 exas .-S t em long and slender, climbing over shrubs. Leaflets longer than
the petiole ; the terminal one very broadly and obtusely rhomboidal, about 2
inches wide; the lateral ones dilated and roundish on the outside. Racemes
fin cleft h a lfT ' a?°Ut -half * e lenSth of the lip cleft half-way down, the sinus obtuse: middle seexgpmanednet do fc otrhoel lalo: wueprp elirp
IncPlVC / t ? '™ °.^ovate, without gibbous projections. Legume £ of an
amlM ^ llnes wide.—The Texan plant has smaller leave?and smaller
and less falcate legumes than our specimens from Louisiana.
§ 2. Calyx 4-parted nearly to the base, persistent and foliaceous ; segments
linear or oblong-lanceolate, acuminate, nearly equal, about the
length o f the corolla: legume much longer than the ca lyx: hilum and
carunculus small: stem erect, or commonly twining or trailing.__
A rcyphyllum, Ell. 1 -
2. R.menispermoidea (DC.): stem twining or prostrate, retrorsely pubescent;
stipules ovate; leaflet solitary, reniform, canescent beneath/peduncles
very short 1-3-flowered ; segments of the calyx lanceolate. DC. in ami.
sci.nat. 4. p. 102, cf mem. L*eg. t. 55, cf prodr. 2 p 384
Texas, D rum m o n d !-Stem 2-3 fleet long, slender, branching from the
base. Leaflets 1 l i inch m diameter, pubescent on both surfaces. Racemes
usually shorter than the petioles. Cafyx with the upper lip cleft one-third
of the way down. Vexillum obovate, with a very slight callosity near the
base of the hmb Legume oval-lanceolate,acute, 1- 2-seeded scarcely pubescent.
DC.—This well-marked species was described by De Candolle from
specimens sent from Acapulco, Mexico.
3. R . tomentosa: stem angular; stipules linear-lanceolate; leaves trifo-
liolate, or sometimes reduced to a single leaflet; leaflets roundish or ovate-
racemes spicate ; legumes oblong, somewhat falcate.-Glycine tomentosa’
I/inn.', Willd. sp. 3. p. 1061; Michx.! fl. 2. p 63
a. monophylla: pubescent; stem erect, dwarfish ( 3-6 inches high); leaflet
mostly solitary, orbicular or reniform, rugosely veined; racemes axillary or
o lf regmte-r r 1 * e. su??1? lt the stem.—R. reniformis, DC. prodr. 2 p
384. Tnfohum simphcifolmm, Walt. Car. p. 184. Glycine tomentosa^’.
monophylla, Michx.! 1. c. G. reniformis, Pursh, fl. 2. p. 86. G. monophylla,
Mitt. gen. 2. p. 115, not of Linn. G. simplicifolia, Ell. sk. 2. p.
234. Arcyphyllum simplicifolium, Ell. in jour. acad. Philad. 1. p. 371.
0. intermedia: pubescent; stem erect; leaves all trifoliolate; leaflets
strongly rugose, middle one roundish, lateral ones ovate.
y. volubilis: pubescent; stem twining (2-4 feet long); upper leaves trifoliolate;
lowest ones unifoliolate; leaflets roundish or broadly ovate, sometimes
rather acute, rugosely veined; racemes few-flowered, shorter than the
leaves.—R. difformis, DC. 1. c. Glycine tomentosa 0. volubilis, Michx.! l.c.
G. tomentosa, Pursh, l. c. (excl. 0.) ; Nutt. 1. c .; Ell. sk. 1. c.
S. erecta: velvety-pubescent; stem erect ( 1-2 feet high) ; leaves trifoliolate
; leaflets oval or oblong, nearly acute, slightly rugose; racemes usually
shorter but often longer than the petioles.—R. erecta, DC. 1. c. Trifolium
erectum, Walt. Car. p. 114. Glycine erecta, Nutt. 1. c .; Ell. sk. 1. c. G.
tomentosa a. erecta, Michx.! 1. c.; Pursh ! 1. c.
e. ? mollissima: velvety-pubescent; (stem erect ?) leaves trifoliolate; leaflets
oval; racemes elongated (5-7 inches long), many-flowered, terminal. Ell.
—Glycine mollissima^ Ell. 1. c.
Dry sandy soils, a. South Carolina! to Florida ! and Alabama ! 0. Tampa
Bay, Florida, Dr. Burrows ! r. North Carolina! to Georgia. 1. Maryland!
to Florida! and Louisiana! c. St. Mary’s, Florida, Baldwin.—Leaflets,
particularly on the lower surface, and the calyx, sprinkled with minute yellowish
resinous dots, which are very distinct in the more glabrous varieties,
but are concealed by the pubescence in S. and probably also in £. Calyx two-
thirds the length of the corolla; segments lanceolate, strongly veined; upper
segment deeply 2-cleft. Vexillum orbicular or broadly obovate, generally
(particularly in y. and S.) with 2 very minute gibbous projections near the
base of the limb. Wings a little longer than the keel. Legume about f of
an inch long and 3 lines wide. Seeds mottled.—From a careful examination
of an extensive series of specimens, we are persuaded that all the varieties
described above are merely forms of one species, as indeed they were
regarded by Michaux. The var. monophylla sometimes bears trifoliolate
leaves, and late in the season produces long axillary branches, which are
sometimes twining. The racemes are extremely variable in’length; but we
have never seen them so long as they are said to occur in the var?mollissima.
4. R. latifolia (Nutt. ! mss.) : softly hirsute; stem angular, twining, stipules
subulate-lanceolate; leaves trifoliolate; leaflets somewhat rhomboidal
dilated, usually obtuse; racemes longer than the leaves, many-flowered;
flowers rather distant, on very short pedicels; segments of the calyx at length
oblong-lanceolate, acuminate ; vexillum obovate; legume oval-oblong.
0.$ more glabrous ; leaflets-smaller, orbicular-obovate, with a short abrupt
acumination, and conspicuously mucronate; racemes about as long as the
leaves; vexillum orbicular, with minute gibbous projections on the inside.
Forests of Arkansas, N u tta ll! Dr. Leavenworth! Red River, Louisiana,
Dr. Hale ! Stem 3-4 feet long, clothed with a soft pubescence. Leaflets
14 inch (in 0. scarcely 1 inch) in diameter, canescent, minutely dotted
beneath ; the terminal one nearly orbicular; the lateral ones more or less
rhomboidal-ovate. Raceme , 4-8 inches long, 10-14-flowered; the flowers
scattered, nearly half an inch long. Corolla bright yellow. Legume three-
fourths of an inch long, and one-third of an inch wide.—Scarcely distinct
from an unnamed West Indian species in our herbarium.
12. PlTCHERIA. Nutt, in jour. acad. Philad. 7. p. 93.
Calyx (marcescent) shorter than the corolla, deeply and about equally 4-
cleft, or very slightly bilabiate; segments subulate, the inferior one a little