PARTHENIUM— PELARGONIUM. 
137 
nated by little spherical heads. Damp or 
wet. 6 18 i. 
palu>i"tris, leaves all cordate, cauline 
ones sessile ; scale smooth, many-bristled ; 
flowers white, with veins of green or pur- 
ple. Bog meadows. 
pnrvijio'ra, very slender, 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. 
astirifo'lia. (Ju. Au. 2^.) radical leaves 
reniform; petals clawed; nectaries 3-clett. 
8. 
PARTIIE'NIUM. 17—4. {Co<ymhiferff:.) 
ititegrifo'liiim, (w. S. 2^.) leaves oblong, 
unequally-toothed, rough ; upper ones clasp- 
ing. 1-2 f. 
PAS'TALUM. 3—2. {Graminem.) [From pas- 
jxilos, millet, which this plant reseinbles in 
its seeds.] 
ciliatifo'lium, (S. 2^.) stem decumbent; 
leaves haiiy, ciliate ; spikes 1-2, indistinctly 
3 rowed. 18 i. 
seta'ce^im, (paspalon-gra.ss, 11.) culin 
erect ; leaves and sheaths villose ; spike 
generally solitary ; flowers in 2 rows. Sandy 
fields. 1-2 f. 
de'lnle, stem weak; leaves and stem hairy; 
spike generally one, slender; flowers alter- 
nate, 1-rowed. S. 
Jloridn' num., (J. S.) erect ; lower leaves 
very villose; upper ones scabrous, hairy ; 
sheaths long ; spikes few ; flowers in 2 
rows, glabrous, lar^e. 3-4 f. 
"prcB cox J (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, IX.) 8tei« creeping; leaves short. 
6omew;hat glaucous, shining; spikes 2, one 
sessile; glumes lanceolate. S. 
PASSIFLO'RA. 15-5. (Cucurlitacecp.) [The 
term Jlos passionis, or passion-flower, was 
before the time of Linnaous, applied to this 
beautiful genus, because the instruments 
of Chri.st's passion were thought to be rep- 
resented by the parts of the flower.] 
cceru'lea, (blue passion-flower, b. Ju. ^.) 
leaves palmate, 5 parted, entire ; petioles 
glandular; involucrum 5-leaved, entire ; 
threads of the crown shorter than the co- 
rolla. Ex. 
liite'a, (yellow passion-flower, y. S. 21.) 
leaves cordate, 3 lobed, obtuse, nearly 
iuiooth ; petioles without glands ; pedun- 
"Atis axillary, in pairs ; petals much longer 
than the calyx; stem climbing and slender. 
Banks of streams. 
incur iia'ta, (w. p. Sept. 11) leaves 
Hnooth ; petioles with 4 glands; involu- 
jrum 3-leaved ; leafets lanceolate, glandu- 
lar-serrate ; stem long, climbing; petals 
white ; nectary purple, longer than the 
corolla ; fruit sub-acid and spongy, eatable. 
ala'ta, (winged passion-flower, Oct. ^).) 
leaves oblong ovate, sub-cordate, entire, 
veiny ; petioles with 4 glands ; stipules 
lance-falcate ; stem 4-cornered. Ex. 
pelta'ta, (^.) leaves ptdtate, deeply 3- 
lobed, t^labrous ; lobes lance-linear ; petioles 
with 2 glands ; peduncles solitary, axillary ; 
petals 0. S. 
wa'rei, (21.) lower leaves 3-lobed, acute 
upper ones undivided, ovate ; petioles with 
2 Inlands; peduncles somewhat in pairs. 
4 6 i. S. Cer.lou'do/u, flowers of a mo.st 
brilliant crimson. Ex. 
PASTINA'CIA. 5—2. (UmbellifercE.) [From 
pasco, to feed ] 
snf.j'vd, (parsnip, y. Au. ^ .) leaves sim- 
ply pinnate; leafets glabrous. 'V?i\:nrven"ds, 
leal'ets sub-pube.scent. This variety is often 
found in situations which almost prove it to 
be indigenous. 
PEC'lIS. 17—2. (Corymhifcrm.) 
a/igufitifo'liu.t. (y. @.) stem branching at 
the ba.'^e, difl'use ; leaves narrow-linear, 
mucronate, denticulate at the base ; teeth 
terminating in hairs ; flowers terminal, soli- 
tary, short peduncled ; involucrum 8-leaved; 
chart" .short, 5-tootlied. 1-2 i. 
PEDICULA'RIS. 13—2. (Pediculares.) [From 
pediculus, a louse.] 
cauadeii"us, (louse-wort, y-p. M. 11) 
stem simple ; leaves pinnatifid, gash-tooth- 
ed ; beads leafy at the base, hirsute : corol- 
la with a setaceous, 2 toothed upper lip ; 
calyx obliquely truncate. 6-12 i. 
■paVlidn, (y.Ju. 2^ .) .stem smooth, branch- 
ed ; leaves sub-op pcsite, lanceolate, pin- 
natifid, toothed and crenate, scabrous on 
the margiii ; helmet of the corolla truncated 
at the apex ; calyx bifid, with roundish 
segments. 1-2 f 
rcAupiii'i'la, (p. Ju. 2^.) stem simple, 
glabrdus; leaves lanceolate, toothed, cre- 
nate; calyx bitid-lruncate ; upper lip of the 
coro! acute. Canada. 
hirsii'la, (r. 11..) stem simple; leaves pin- 
nate ; leafets lanceolate, obtusely-toothed ; 
calyx hirsute, o-cleft ; upper lip of the co- 
rolla very obtuse. 
clo'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. 
gladiafta, (y-p. J. 11) stem simple ; leaves 
lanceolate, pinnatifid, toothed ; spikes leafy, 
hairy ; flowers alternate ; capsule termina- 
ting in a long, fiat point. 1 f 
PELARGO'NIUM. 15—7. (Gerania.) [From 
pelarffos, a stork, on account ol the sliape 
of the pericaip, wliich resembles a storlc's 
bill.] 
A. Near!]/ siemless ; roots tuberous. 
tris"te, (mourning geranium,) umbel 
simple ; leaves rough-haired, pinnate ; leaf- 
ets bi-pihnatifid ; diviaions oblong-acute , 
flowers dark green. 
daucifo'lium, (carrot geranium, 11.) scape 
very .simple ; leaves thrice pinnate, hirsute ; 
leafets lance-linear. 
B. Leaves simple, not angled. 
odoratis" simum, (sweet-scented geraui- 
