PARTHENIUM -PELARGONIUM. 
443 
Bated by little spherical heads. Damp or 
wet. 6-18 i. 
palus"tris, leaves all cordate, cauline 
ones sessile ; scale smooth, mauy-bristled ; 
flowers white, with veins of green or pur- 
ple. Bog meadows. 
pnrvijlo'ra, very slendei*, with slender, 
bristly scales, about 5 ; radical leaves ovate, 
tapering into the petiole ; cauline ones lin- 
ear, oblong-sessile, 
Jimhria'ta, scales broad, wedge-form, 
fleshy, crenate in the middle, within keel- 
ed, naked ; radical leaves long petioled, ear 
kidney-form ; cauline ones cordate, sessile, 
inserted much above the middle ; petals 
fringed at the base. 
axarifo'lia, (Ju. Au. Z/.) radical leaves 
reniform; petals clawed; nectaries 3-dG It. 
S. 
PARTHE'NIUM. 17—4. {Co-ymbiferan.) 
integrifo'lium, (w. S. 1/.) leaves oblong, 
unequally-toothed, rough ; upper ones clasp- 
ing. 1-2 f. 
PAS"PALUi\I. 3—2. {Graminem.) [From pas- 
palos, millet, which this plant resembles in 
its seeds.] 
ciliatifo'lmm, (S. 2^.) stem decumbent; 
leaves haiiy, ciliate ; spikes 1-2, indistinctly 
3-rowed. 18 i. 
seta'ceiim, (paspalon-grass, 11.) culm 
erect ; leaves and sheaths villose ; spike 
generally solitary ; flowers in 2 rows. Sandy 
fields. 1-2 f. 
de'bile, stem weak; leaves and stem hairy; 
spike generally one, slender; flowers alter- 
nate, l-rowed. S. 
Jloridii'imm, (J. S.) erect ; lower leaves 
very villose; upper ones scabrous, hairy ; 
eheaths long ; spikes few ; flowers in 2 
rows, glabrous, large. 3-4 f. 
prce'cox, (J.) erect; leaves lanceolate- 
linear, glabrous ; spikes many, alternate ; 
rachis narrow, hairy at base ; flowers 3- 
rowed. Damp soil. S. 
dis'tichum, (creeping paspalum, joint- 
grass, 2X.) stem creeping; leaves short, 
somewhat glaucous, shining; spikes 2, one 
sessile; glumes lanceolate. S. 
PASSIFLO'RA. 15—5. {Cucurhitaceap..) [The 
term flos passionis, or passion-flower, was 
before the time ol Linnaus, applied to this 
beaulifui genus, because the instruments 
of Christ's passion were thought to be rep- 
resented by the parts of the flower.] 
ceeru'lea, (blue passion-flower, b. Ju. ^.) 
\eaves palmate, 5 parted, entire ; petioles 
glandular; involucrum 5-leaved, entire; 
threads of the crown shorter than the co- 
rolla. Ex. 
Inl^a, (yellow passion-flower, y. S. 2^.) 
leaves cordate, 3 lobed, obtuse, nearly 
miooth ; petioles without glands ; pedun- 
cles axillary, in pairs ; petals much longer 
than the calyx ; stem climbing and slender. 
Banks of streams. 
incur na'ta, (w. p. Sept. 2^.) leaves 
jmooth ; petioles with z glands; involu- 
3rum 3-leaved ; leafets lanceolate, glandu- 
lar-serrate ; stem long, climbing; petals 
white ; nectary purple, longer than the 
fornlla ; fruit sub-acid and spongy, eatable. 
ala'ta, (winged passion-flower, Oct. 
leaves oblong ovate, sub cordate, erttiro, 
veiny ; petioles with 4 glands ; stipule* 
lance-falcate ; stem 4-cornered. Ex. 
pelta'ta, ( ^ .) leaves peltate, deeply 3- 
lobed, glabrous ; lobes lance-linear ; petioles 
v/ith 2 glands ; peduncles solitary, axillary 
petals 0. S. 
7va'iei, (21.) lower leaves 3-lobed, acute 
upper ones undivided, ovate ; petioles with 
2 glands ; peduncles somewhat in pairs. 
4 6 i. S. Oev.lou'doni, flowers of a most 
brilHant crimson. Ex. 
PASTINA'CA. 5—2. (UmbeUiferce.) [From 
pasco, to feed ] 
suti'va, (parsnip, y. Au. $ .) leaves sim- 
ply pinnate; leafets glabrous. \w.arverf!'sis, 
leafets sub-pubescent. This variety is often 
found in situations which almost prove it to 
be indigenous. 
PEC'TIS. 17—2. {CorymbifercE.) 
angust/fo'lins, (y. 1^.) stem branching at 
the ba.se, dilFnse ; leaves narrow-linear, 
mncronate, denticulate at the base ; teeth 
terminating in hairs ; flowers terminal, soli 
tary, short peduncled ; involucrum 8-leaved; 
chaff" short, 5-toothed. 1-2 i. 
PEDICULA'RIS. 13—2. (Pedicular es.) [From 
pedir.ulus, a louse.] 
caaad€u"sis, (louse-wort, y-p. M. Z^.) 
stem simple ; leaves pinnatifid, gash-tooth- 
ed ; heads leafy at the base, hirsute ; corol 
la with a setaceous, 2 toothed upper hp , 
calyx ob!i(iuely truncate. 6- 12 i. 
paVlida, (y.Ju. ZJ!.) stem smooth, branch 
ed; leaves sub-opposite, lanceolate, pin- 
natifid, toothed and crenate, scabrous on 
the margin ; helmet of the corolla truncated 
at the apex; calyx bifid, with roundish 
segments. 1-2 f. 
rempiiia'ta, (p. Ju. Z^.) stem simple, 
glabrous; leaves lanceolate, toothed, cre- 
nate ; calyx bifid-truncate ; upper lip of the 
corol acute. Canada. 
hirsu'ta, (r. 11.) stem simple; leaves pin- 
nate ; leafets lanceolate, obtusely-toothed ; 
calyx hirsute, 5-cleft ; upper lip of the co- 
rolla very obtuse. 
ehi'ta, (p. Ju. 11.) stem simple; leaves 
deeply pinnatifid ; divisions lance-linear, 
crenate; spike lax, somewhat leafy; calyx 
glabrous, 5-toothed ; upper lip of the corol- 
la obtuse, truncate. 2 f 
gladia'ta, (y-p. J..Z/.) stem simple ; leaves 
lanceolate, pinnatifid, toothed ; spikes leafy, 
hairy ; flowers alternate ; capsule termina- 
ting in a long, flat point. 1 f 
PELARGO'NIUM. 15—7. (Gerania.) [From 
pelar^os, a Stork, on account of the shape 
ol the pericarp, which resembles a stork's 
bill.] 
A. Nearly stemless ; roots tuberous. 
tiis"te, (mourning geranium,) umbel 
simple ; leaves rougli-haired, pinnate ; leaf- 
' ets bi-pinnatifid ; divisdons oblong-acute , 
flowers dark green. 
daiicifo'lium, (carrot geranium, 11.) scape 
very simple ; leaves thrice pinnate, hirsute 
leafets lance-linear, 
i B. Leaves simple, not angled. 
i odoratis"simum, (sweet scented gerani- 
