AP O GO N— ARE N ARIA. 
75 
ridged, central lobe rounded, crenulate. 
Shady woods. Flowers pendiilous. 1 f. 
APO'GON. 17—1. (Cichoracea.) [From a, 
withotit, pogon, beard.] 
himil"is, (y. Ap. 0.) stem glabrous; rad- 
ical leaves sessile, cauline leaves, ligulate, 
acute, leaves entire, glabrous. 
APOCYNUM. 18— .5. (Aporynem.) [From 
apo. against, and kunos, a dog.] 
aiidroxcemifo'lifim, (dog-bane, r-w. J. If.) 
Btem erect and branching ; leaves ovate ; 
cymes lateral and tenninal ; tube of the 
corolla longer than the calyx, with a spread- 
ing limb. 3 f. 
ca7inah"in,um, (g-y. J. 2Lf.) leaves lanceo- 
late, acute at each end, smooth on both 
sides ; cymes paniculate ; calyx as long as 
the tube of the corolla. 
APTE'RIA. 3-1. {Junci.) [From the Greek 
a, without, pteris, wings.] 
seta'cea, (w. and p. @.) stem with minute, 
ovate, remote scales; spikes with bifid 
branches. 6 1. S. 
AQUILE'GIA. 12—5. {Ranunculacem.) [From 
the Latin aqua, water, and ago, to gather, 
so called from the shape of its leaves, which 
retain water.] 
canaden"sis, (wild columbine, r. y. 
Ap. 2^.) horns straight; stamens exsert; 
leaves decompound. Growing frequently 
in crevices of rocks. 15 i. 
cceni'Iia, (b. J. 2^.) horns twice as long as 
the petals ; nectaries acute ; segments of 
the leaves deeply lobed. 18-1. Southern. 
vulga'ns, (garden columbine, J. 14.-) horns 
incurved ; leafy ; stem and leaves glabrous ; 
leaves decompound. The nectariferous 
horns become numerous by culture ; one 
hollow horn within another. 15 i. Ex. 
brevisty'la, sub-pubescent; spur incurved, 
shorter than the limb ; stipe sllort, inclined ; 
stamens shorter than the corolla. Upper 
Canada. 
formo'm, (2J!. r.) spur straight, much 
longer than the limb ; sepals lanceolate, 
acute, 3 times the length of the petals ; 
style as long as the sepals. Oregon. 
AR"AB1S. 14—2. (CrucifercE.) [Probably named 
in Arabia ] 
lyralta, (w. A. $ .) stem and upper leaves 
smooth and glaucous ; radical leaves lyrate- 
pinnatifid, often pilose ; stem branched at 
the base ; pedicels much longer than the 
calyx. 10 i. 
_ canaden'sis, (w. J. IX) stem leaves ses- 
sile, oblong-lanceolate, narrow at the base, 
pubescent ; pedicels pubescent, reflexed in 
the fruit ; siliques pendulou.s, sub-falcate, j 
nerved. 2 f | 
rhomho'idea, (spring cress, w. M. IX-) 
leaves glabrous, rhomboidal, repand-tooth- j 
ed, the lower ones nearly round, on long , 
petioles ; root tuberous. 15 i. Wet. j 
derita'ta, (^. w. Ap.) stellately pubes- 1 
cent ; radical leaves obovate, tapering at 
the base into a petiole, as long as the limb, i 
irregularly sharp toothed ; caiiline ones, 
oblong, clasping ; flowers minute ; petals , 
epatulate, scarcely longer than the calyx ; ; 
silique short, spreading on very narrow 
pecQcels. pointed with a nearly sessile stig- i 
ma ; stem branched from the base. Arkan- 
sas. Mississippi. 
sagitta'ta, (wall-cress, w. J. $ .) leaves 
sub-dentate, rough, with the pubescens 
often branched ; radical ones ovate or ob- 
long, attenuated into a petiole ; stem leaves 
lanceolate, sagittate, cordate; pedicels as 
long as the calyx ; siliques straight and 
erect. 18 i. 
ARA'CHIS. 16—10 (Leguminosea;.) [A Greek 
word, signifying a rooting plant.] 
hypogm'a, (pea-nut, false ground-nut, 0.) 
stem procumbent, pilose ; leaves pinnate ; 
flowers axillaiy; peduncles become long, 
and the fniit is ripened under ground. 
ARA'LIA. 5—5. (Aralim ) [From ara, a 
bank in the sea, in allusion to the habit of 
tiie plant J 
racevio'sa, (spikenai-d, w. J. 2^.) spread 
ing branches ; petioles 3-parted, the 
partitions 3-5-leaved; leafets often heart- 
form; branchlets axillary, leafy; umbels 
many, sub-panicled, leafless above. Damp. 
4 f. 
nudicau'lis, (g-w. J. 2^.) stem hardly a 
caulis; leaf solitary, terquin ate; scape short- 
er than the leaf; umbels few. Wild sar- 
saparilla. 15 i. S. 
spino'sa (shot-bush, angelica tree, w. y- 
w. Au. ^ .) stem and leaves thorny ; 
leaves douljly pinnate ; leafets slightly 
serrate ; panicles branching ; umbels nu- 
merous. 
ARBU'TUS. 10—1. (EricoR.) 
uva-ur"si, (bear-berry, kinnildnnick, w-r. 
M. Ip.) stem procumbent ; leaves wedge- 
obovate, entire ; berry 5-seeded. Dry, 
bai-ren sand-plains, &c. Very abundant 
about the great lakes. 
alpi'na, (strawberry-tree, w. M. ^.) stem 
procumbent; leaves obovate, acute, rugose, 
serrate ; racemes terminal. Canada. 
ARCHEMO'RA. 5—2. (Umbellifercc.) [From 
arche, the conqueror, moras, a fool, from poi- 
soning those who eat it.] 
ambig"ua or rigid"a, (water drop-wort, 
w. Au. 2X-) leaves gash-pinnate, 3-5 pairs, 
acute, leafets lance-linear, often falcate and 
mostly entire ; fruit ovate ; stem smooth. 
3-5 f 
ARCTIUM. 17—1. (Cinarocephalw) [From 
arktos, a bear, so called on account of its 
roughness.] 
lap" pa, (burdock, r. Au. U.) cauline 
leaves heart-form, petioled, toothed ; flow- 
ers panicled, globose ; calyx smooth. 
ARENA'RIA. 10—3. {CaryophyllecB.) [From 
arena, sand.] 
laterijior"a, (sand-wort, w. J. IX) stem 
filiform, simple ; leaves ovate, obtuse, sub- 
triple-nerved ; peduncles lateral, solitary, 
elongated, 2-cleft ; pedicels alternately brnc- 
ted ; corolla longer than the calyx. 6 10 i. 
gla'bra, (^24! •) very smooth ; stems numer- 
ous, erect, hliform ; leaves subulate, Hnear, 
flat, spreading ; pedicels 1-flowered. elon- 
gated, divaricate ; sepals ovate, obtuse, 
shorter than the petals. Mountains. Flow- 
ers large, white. Stem 4-6 i. erect, slen- 
der. 
serpyll'ifo'lia, (thyme-leaved sand-woi't. 
