SECTION IV. 
SPECIES OF PLANTS. 
ACACIA. 15—10. ( Leguminoscc .) [From the Greek aka'zo , to sharpen.] 
glandulo'sa ) (w. Ju. %.) leaves bipinnate, leafets 12-paired, glands between 
each pair; spikes globose, solitary, peduncled, axillary; legume falcate; 
unarmed. & 
farnesia'na , (y. To.) leaves bipinnate, leafets 8-paired; spikes globose, sessile. 
Flowers fragrant, legumes fusiform. S. 
ACALYPHA. 19—15. ( Euphorbia ,.) [From the Greek a, not, kalos, agreeable, aphe , to the 
touch.] 
virgin"ica , (three-seeded mercury, g. Au. <y>.) pubescent; leaves on short pe¬ 
tioles, lanceolate-oblong, remotely and obtusely serrate; involucre cordate, 
ovate, acuminate, toothed; fertile flowers at the base of the steril spike. 
Road-sides. 12 to 18 i. 
ACER. 8—1. ( Acera .) [Latin acer, acrid, referring to the juice of some of the species.] 
rvJbrum , (red maple, soft maple, r. Ap. 1?.) leaves palmate, 5-lobed, cordate 
at the base, unequally gash-toothed, glaucous beneath, dividing incisions be¬ 
tween the lobes acute; flowers in fives, in sessile umbels, with long pedicels; 
germs glabrous. 50 f. 
sacchari'num , (sugar maple, rock maple, hard maple, r. y. M. ??.) leaves palm¬ 
ate, 5-lobed, at the base sub-cordate, acuminate, obtusely sinuate, sinuate¬ 
toothed, glaucous beneath; peduncles in a nodding corymb. Large tree. 
50 f. 
stria'turn, (striped maple, false dogwood, moose wood, g. M. f>.) lower leaves 
roundish, upper ones 3-cuspidate-acuminate, sharply serrate, glabrous ; ra¬ 
cemes simple, pendent. Small tree, with a greenish, striped bark. 15 f. 
ACERATES.* 18—5. ( Asclepiadcb .) [From the Greek a, without, her as , horn.] 
virid"ijlora , (green milkweed, g. Ju. f 2J..) stem erect, simple, hairy; leaves 
oblong, on short petioles; tomentose, obtuse; umbels lateral, solitary sub- 
sessile, nodding, dense; horns of the nectary wanting. Sandy fields. 
Stem 2 f. Flowers green. 
ACHILLEA. 17—2. ( Corymbifercb .) [From the Greek warrior Achilles.] 
millefo'lium, (y arrow, milfoil, w. J. Tj..) leaves 2-pinnatifid, downy; the di¬ 
visions linear, toothed, mucronate ; calyx and stem furrowed. 15 i. $. 
ACIIYRANTIIES. 15—5. ( Amaranthi.) [From the Greek achu'ron, chaff, and anthos, flower.] 
re'pens , (forty knot, March. A-) stem procumbent, pubescent; leaves opposite, 
petioled, lanceolate. Flowers in heads. 
ACNIDA. 20—5. ( Chenupodecb .) [From the Greek a, wanting, knide, a sting.] 
cannabi'num , (water hemp, w. g. Ju. <v>.) leaves ovate-lanceolate; capsules 
smooth, acutely angled. Marshes. Can. to Flor. Flowers small, green, in 
large panicles. 
ACONITUM. 12—5. ( Ranunculacea 3 ,) [From the Greek akone , rugged, in allusion to its 
habit..] 
uncina'tum , (monk’s hood, b. J. A ) stem flexuose ; leaves palmate, 3 to5-part- 
ed; divisions rhomb-lanceolate, gash-toothed; upper lip of the corolla 
lengthened, convex, beaked. Grows on mountains and rough places. Cul¬ 
tivated. 2 f. 
napel"lus , (wolf’s bane, b. J. A) leaves shining, 5-parted ; the divisions 
3-parted by gashed incisions, subdivisions linear; upper lip of the corolla 
lanceolate, ascending, 2-cleft, spur straight, obtuse. 2 f. Ex. 
* This genus is scarcely distinct from Asclepias. 
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