142 
PIPTATHERUM— PLATYSTEMON. 
scales reflexed, lacerate ; bracts guitar- 
form. Ex. 
pv,n"^ens, (table mountain pine, 1?.) 
leaves by pairs, short, acute ; cones ovate- 
conical, spines of the scales long, subulate, 
incurved, lower ones reflexed. 40-50 f, S. 
tce'da, (M. Ip.) leaves long, by threes; 
elieaths long; strobiles oblong-conic, de- 
flexed, shorter than the leaves; spines in- 
flexed. Var. heterophyl"la,\edL\es in pairs 
and threes ; bark smooth. 
paluii"tris, (long-leaved, yellow, or pitch- 
pine, M. ^).) leaves by threes, very long; 
stipules pinnatifid, ramentaceous, persist- 
ent ; strobiles subcylindric, muricate. Tim- 
ber, extensively used in the Southern 
States. 
PITER. 2-3. (UrUcecE.) [Originally ptjjpuZ, 
in the Bengalese tongue.] 
lepoHta'ckyun, (Florida pepper, @.) her- 
baceous, small, leaves obovate, obtuse, sub- 
3-nerved, pubescent; spikes axillary, fili- 
form, erect, much longer than the leaves. 
6-12 i. S. 
PIPTATHE'RUM. 3—2. (Graminea:.) [From 
pipto, to fall, and the.ios, harvest, summer.] 
racemo'siim, or nigrum, (clu.stered or 
black seed millet grass, Au. 1X-) panicle 
simple; flowers racemose, ovate-lanceolate ; 
corolla black, hairy ; awn as long again as 
the glume. 
PIS"TFA. 15—8. (Gerania.) 
spathnla'tn, (w. Ju.) leaves abruptly nar- 
rowed into the petiole, dilated, round and 
obtuse toward the summit. S. 
Pl'SUM'. 16—10. (LegutmnoscB.) 
sativum, (pea, p. w. J. @.) petioles terete ; 
stipules round and crenate at the base; 
peduncles many-flowered. Var. umhella- 
tum, (bouquet-pea,) has the stipules 4-cleft, 
acute. Var. quadra'tum, (quadrate pea.) 
fruit ash-color, 4-sided. Y-a.v.hu'mile, (dwaif 
pea,) stem erect, not climbing; leafets 
roundish. Ex. 
PITCH^'ERIA, 16—10. (Leguminosa.) [In 
honor of Dr. Pitcher of U. S. A.J 
galactoi'des, (r. 11.) stem erect, rigid, 
branched, smooth ; leaves trifoliate, oval, 
obtuse, glandular-dotted beneath. S. Flo- 
rida. 
PLANE'RA. 5- 2. (AmentacecE.) 
aqnat"ica, (M. ^.) leaves ovate, acute, 
serrate, equal at the base, slightly scabrous, 
short-petioled. 25 30 f. S. 
PLANTA'GO. 4-1. (Plantaginea.) [From 
planta, the sole of the foot, .so called because 
its leaves are trodden under foot.] 
mn'jor, (plantain, w. J. 2^.) leaves ovate, 
sub-dentate, sub-glabrous; scape terete; 
spike oblong, imbricate. 6-24 i. 
lanceola'ta, (English plantain, ripple 
grass, J. ll) leaves lanceolate; spike short, 
ovate-cylindrical ; scape angular ; capsule 
2-seeded. 1-2 f 
virgin"ica, (dwarf plantain, r-y. J. 
hoary-pubescent ; leaves lanceolate-ovate, 
sub-denticulate ; spikes cylindric, with re- 
mote flowers ; scape angular ; cap 2-seeded. 
corda'ta, (w. J. 11.) leaves ovate, cordate, 
broad, sub-dentate, smooth ; spike very 
long ; flowers sub-imbricate, lower ones 
scattered ; bracts ovate, obtuse ; cells of the 
capsule 2-seeded. 12-18 i. 
me'din, (w. J. 2/.) leaves ovate, pubes- 
cent, short petioled ; scape terete ; spike 
short, cylindric ; cells 1-seeded. One va- 
riety has the leaves hirsute and the spikes 
branching. 
I mariti'mn, (sea plantain, Au. 2^.) leaves 
linear, grooved, fleshy, haiiy near the base; 
scape rou nd, terete ; spike cylindric ; bracta 
\ acutish. 6-10 i. 
I jmnV'la, (Au. 0.) minutely pubescent; 
leaves linear-subulate, flat, entire, acute, 
scape terete, longer than the leaves ; spike 
cylindric, loose ; lower flowers distant ; 
bracts ovate, acute, as long as the calyx. 
i cucnlla'f.a, f.Ju. 2/.) leaves ovate-cucul- 
late, sub-denticulate, 9-nerved, pubescent 
I beneath ; spike cylindric, imbricate ; scape 
1 terete. 
eriopo'da, {2S.) stemless petioles covered 
I with long wool at the base ; leaves broad- 
I lanceolate, alternate at each end, long-pe- 
tioled, glabrous, entire, 5-nerved ; scape 
terete, glabrous, spike cylindric; flowers 
remote ; stamens and styles long ; bracts 
broad-ovate, obtusish ; capsules 2-seeded. 
9-12 i. 
I intemip"ta, (Ju. 2^.) leaves lanceolate 
entire, hairy ; spike long, slender, inter- 
rupted ; flowers scattered, glabrous. S. 
gla'bra, leaves ovate, denticulate, smooth 
scape slender, sub-compressed, nearly equal 
to the leaves ; flowers scattered ; bracts 
ovate, acuminate. S. 
gnnpholoi'des, (Ju. @.) silky-villose ; 
leaves lance-linear, very entire; scape te- 
rete, scarcely longer than the leaves ; spike 
cylindric, intricate ; bracts linear, with long, 
villose ciliae. S. 
PLATAN"THERA. 18—1. {Orchidea.) [From 
platys, broad, anthe'ra, anther, from the width 
of that organ.] 
orhicula'ta, (g-w. J. If.) leaves 2, radi- 
cal, orbicular ; scape with 2 or 3 bract-like 
leaves, many-flowered ; bracts shorter than 
the flowers ; lip lance-linear, obtuse ; spur 
longer than the ovary. 12 18 i. 
dilata'ta, (giant orchis, w. or g. J. 2| .) 
spur .shorter than the germ ; lip entire, lin- 
ear, with the base dilated of the length of 
the spur; bracts of the length of the flower 
On mountains the flowers are green, in 
the meadows white. 1-4 f. 
PLATA'NUS, 19—13. {AmentaceeB.) [From 
plata, broad, alluding to the size of the tree ] 
Occident" alia, (buttonwood, American 
plane-tree, false sycamore, J. ^ .) leaves 5- 
angular, obsoletely lobed, toothed, pubes- 
cent beneath ; stem and branches becoming 
white. One of the largest trees in North 
America. 
PLATYS"TEMON, 12—12. {PapaveracecR.) 
\- om platus, broad, stemon, strand or fila- 
ment.] 
calif or" nicvm, (y-w. leaves half clasp- 
ing, oblong, linear, obtuse, entire, alternate, 
3-5-nei-ved ; peduncles axillary, elongated. 
1-flowered ; plant sparsely covered with 
shaggy, spreading hairs. California. 
