146 
POLYMNIA— PORCELIA. 
lanceolate, acuminate, hirsute ; stipules hir- 
sute, ciliate ; stem erect, glabrous. 1-2 f. S. 
grafcile, (g-w. @.) dicBcious, glaucous ; 
racemes slender, filiform; flowers deflected, 
longer than the peduncles ; peduncle artic- 
ulated to the calyx ; leaves spatulate linear, 
obtuse ; fruit longer than the calyx, 1-4 f. S. 
POLYM"NlA. 17— 4v (Corymbiferoi.) [Named 
from Polyhymnia, the muse of eloquence.] 
canadeti"iiis, (y. J. 2X .) viscid-villose ; 
leaves denticulate, acuminate, lower ones 
pinnatifid, upper 3-lobed or entire. 2-4 f. 
Flowers in a loose terminal panicle. Shady 
hills. 
uveda'lia, (yellow leaf -cup, y. Ju. 2X-) 
leaves opposite, G lobed, acute, decurrent 
into the petiole ; lobes sinuate-angled ; rays 
elongated. 3-5 f. 
POLYPO'DIUM. 21—1. (Filices.) [From polus, 
many, and pous, foot, because it has many 
roots.] 
vulga're, (polypod. Ju. 2^.) frond deeply 
pinnatifid ; divisions lance-linear, obtuse, 
srenulate, approximate, upper ones gradu- 
ally smaller ; fruit dots .solitary ; root chaffy. 
8-12 i. 
h€xagonop"tenim., (Ju. 2/.) fronds bipin- 
natifid, rather smooth, circumference trian- 
gular, lower divisions deflexed ; segments 
lanceolate, obtufse. ciliate, upper ones en- 
tire, lower ones adnate decurrent ; sori mi- 
nute, sohtary; stipe smooth. 12-16 i. 
connec"tile, (Ju. 2^.) fronds bipinnatifid, 
ciliate, triangular ; divisions opposite, con- 
tiguous, adnate; segments sub-elliptical; 
stipe chaffy ; sori minute. 12 i. 
Virginia' num, (Ju. 2S-) fronds deeply 
pinnatifid ; divisions lanceolate, obtuse, very 
entire, approximate, upper ones gradually 
smaller ; sori and root solitai-y. S. 
inca'rmvi, (Ju. 14-.) fronds deeply pinnati- 
fid ; divisions alternate, linear, very entire. 
obtu.se, upper ones gradually smaller, scaly 
beneath ; stipe scaly, fi-uit-beaiing at the 
apex ; sori solitary. S. 
POLYPRE'MUM. 4—1. (GentinnecB.) [From 
polus, many, and premnon, stalk or shoot ] 
procnm"/)e>is, (w. Ju. 0.) stem herba- 
ceous, procumbent, furrowed, margins of 
the furrows sharply serrulate, dichotomous 
above ; leaves opposite, linear, sessile, finely 
serrulate, sub-decurrent. 6-12 i. 
POLYP"TERIS. 17—1. (Corymhiferce.) [From 
polus, mn.ny, and pteris, a wing, alluding to 
the many-valved (or winged; egret.] 
integrifo'lia, (ZJ[.) erect; sub-scabrous, 
branching above ; leaves alternate, sca- 
brous, entire, linear-lanceolate ; style 2-cleft, 
longer than the stamens. 3-4 f. S. 
POLYTRl'CHUM. 21—2. {Musci.) [From 
polusy many, and thrix, hair, so called from 
its resemblance to hair J 
jxini'peri' num, (hair-cap moss, M. 2^.) 
stem generally simple ; leaves lance-linear, 
entire, flattish, somewhat spreading; the 
apophysis depressed. In dry woods, &c. 
POMA'RIA. 10—1. (Leguminosa.) 
glandulo' sa , (y. .) branching ; glandular- 
punctate ; branches .slender, sub-pubescent ; 
leaves abruptly bipinnate; leafets ovate, 
oblique at the base, entire, ses.sile, sub-pi- 
lose, smooth and pale gi'een above. S, 
PONTEDE'RIA. 6—1. (Narcissi.) [Name 
from an ancient botanist, Pontidera.] 
corda'ta, (pickerel- weed, b. Ju. 2/.) 
leaves heart-oblong, obtuse ; spike many 
flowered, compact ; divisions of the corolla 
oblong. Var. angustifo'lia, leaves elonga- 
ted, triangular, ti-uncate, and sub-cordate at 
the base. 1-2 f. 
POP'^ULUS. 20—8. {Amentacea.) [The ori- 
gin of the name is doubtful.] 
tremuloi'des, (white poplar, American 
aspen, Ap. '^.) leaves heart roundish, ab 
ruptly acuminate, tooth-serrulate, glabrous, 
a little pubescent at the margin, with two 
glands at the base, on the upper side ; peti- 
oles compressed, in the young state silky. 
! 20 30 f. 
hahamife'ra, (balsam poplar, Ap. Ip.) 
I leaves ovate, acuminate, white, and net- 
j veined beneath ; buds re.sinous. 70 80 f. 
I angvUi'td, (balm of Gilead, Ap. ^ .) 
I leaves ovate-deltoid, acuminate, glabrous , 
branches wing angled. 80 f 
dihita'fa, (Lombardy poplar, Italian pop- 
lar, Ap. 1p .) leaves glabrous both sides, acu- 
minate, serrate, deltoid, the breadth equal 
to, or exceeding the length ; branches erect, 
close to the stem. It is said no pistillate 
plant of this species has been brought to 
America ; consequently no seeds are ob 
tained from it. 40-80 f. Ex. 
grandid,en"tata, (tree poplar, A p. Tp.) 
leaves round-ovate, acute, unequally and 
coar.sely sinuate-toothed, glabrous, whea 
young, villose ; petioles compres,sed. Var. 
jt?e«'^<^?/Za!,branches pendulous. 40-50 f. 
betidifo'lia, (birch-leaf poplar, Ap. ^ .) 
leaves rhomboidal, long acuminate, dentate, 
glabrous ; young branches pilose. 30-40 f. 
can"dicanH, (Ap. Hp.) leaves cordate, 
ovate, acuminate, obtusely and unequally 
serrate, white beneath, sub-3-nerved, retic- 
ular veined ; petioles haiiy ; buds resinous. 
40-50 f. 
Iceviga'ta, (cotton-tree, Ap. 1? .) leaves 
round-ovate, deltoid, acuminate, sub-cor- 
date, unequally serrate, glabrous, plandular 
at ba.se; petioles compressed; younger 
branches angled. 70-80 f. 
hef.eropli.yl" la, (various leaved poplar, M. 
^ leaves round-ovate, cordate ; the sinus 
small, cordate and somewhat auricled ; 
when young, tomentose. 70-80 f. 
monoltfe'rn, (Ap. ^.) leaves sub-cordate- 
deltoid, glabrous, glandular at the base, 
with cartilaginous, sub-pillose, hooked ser. 
ratures ; nerves spreading ; petioles com- 
pres.sed above ; older branches terete. 
60-70 f. 
grce'ca, (Athenian poplar, Ap. ^ .) leaves 
cordate-ovate, acuminate, obsoletely ser- 
rate ; petioles compressed. 20-40 f. Ex. 
PORCEL'IA. 12—12. Unnonm.) [In honor 
of Porcel, a distinguished Spanish botanist.] 
trilo'ba, (custard apple, paw-paw, p. Ap. 
^).) leaves smoothish, oblong- wedge-obo- 
vate ; outer petals orbicular ; fruit large, 
fleshy. 30-40 f. 
pamijio'ra, (g-p. M. ^ .) leaves wedge- 
obovate, mucronate, under surface and 
branches rufous-pubescent; outer petals 
scarcely twice as long as the calyx. 2 f. i? 
