142 
PANICUM— PARNASSIA. 
PAN ICUM. 3—2. {GraminetE.) 
cruft gal"li, (barn-grass, Au. @.) racemes 
alternate fnd in pairs; compound racliis 
5-angled ; glumes terminating in hispid 
bristles; sheath glabrous. 2 4 f. 
his"pidur)i, (S. Oc. @.) panicle com- 
pound; nodding racemes alternate ; glumes 
terminating in hispid bristles: sheaths his- 
pid. Salt marshes. 3-4 f. 
dandesti'nvm, (Au. Z^.) culm m ith short 
axillary branches ; leaves Ijroad-lanceolate, 
cordate at base ; sheaths hispid. enclo.sing 
the short panicle; abortive floret neutral, 
2-valved, upper valve obtu.se. Moist woods. 
2-3 f. 
latifo'Iiitm, (Ju. Z^.) culm mostly simple, 
bearded at the joints ; leaves oblong-lance- 
olate, smooth, or with the sheaths somewhat 
pubescent; panicle terminal, a little ex- 
Bert, simple, pubescent ; spikelets oblong- 
ovate ; abortive floret antheriferous, 2 val- 
ved. 1 f. 
piibes"ccm, (J. 11.) erect, much branched, 
leafy, softly pubescent ; leaves lanceolate, 
ciliate ; panicle small, few-flowered, free ; 
spikelets sub-globose, ovate, pubescent. 
18 i. 
dic1wt"omuvi, (Au. H.) culm much 
branched, dichotomous above ; branches 
fasciculate; leaves numerous, lanceolate, 
smooth ; panicle simple, capillary, lax ; 
abortive floret neutral ; upper valve mi- 
nute, bifid. Var. cnirv(i tum,c\i\m very tall ; 
branches few, somewhat curved. Var. 
f'ancicula'tum, culm low, erect, or decum- 
bent; branches and leaves dense-fascicled ; 
janicles small, concealed among the leaves. 
Var. gra'dli, culm tall, slender ; leaves 
Qiembranaceous. 8-16 i. 
ni'lidum, (panic grass, Ju. 14..) culm slen- 
der, simple, smooth; sheaths bearded at 
the throat; leaves few, broad-linear; pan- 
icle capillary, rather crowded, compound, 
remote, smooth ; spikelets minute, obtuse, 
ovate, slightly pubescent ; lower glume 
very small. Var. cilia' turn, culm hairy; 
leaves linear-lanceolate (lower ones broad- 
er), sparingly hirsute, ciliate on the mar- 
gin; panicle with the branches and flowers 
pubescent. Var. ramnlo'snm, culm more 
branched ; panicle contracted ; branches 
smooth. Var. pilo'sum, culm very hairy ; 
k)wer leaves approximate and broad-lance- 
olate, upper ones linear, rather rigid, sub- 
oilose above, ciliate at base ; sheaths vil- 
ose, minutely papillose ; panicle sub-con- 
tracted ; branches virgate ; flowers pubes- 
cent. Var. gla'bnim, smooth except the 
base of the leaves, nearly simple ; lower 
'eaves short, approximate, sub-cartilagi- 
30US; panicle branched, almost verticiUate; 
spikelets large; upper valve of the abortive 
floret entire. Var. barba'tnm. culm simple, 
Bmooth ; nodes hairy ; leaves linear-lanceo- 
late ; sheaths smooth, except on the mar- 
gin ; flowers minutely pubescent. 1-2 f. 
agroafoi'des, (Au. 11-) culm compressed. 
Bmooth, erect; leaves very long; panicles 
lateral and terminal, pyramidal, spreading ; 
branches bearing racemes; spikelets ap- 
pressed ; abortive floret neutral ; valves 
nearly equal. 2-3 f. 
I virga'inm, (Au. 2/.) whole plant very 
I smooth ; panicle difl\ise, very large ; flow- 
I ers acuminate ; abortive floret nearly equal 
i 3-4 f. 
capillafre, (S. @.) culm nearly simple ; 
sheaths very hairy ; panicle large, capillary 
expanding, loose ; spikelets long-peduncled, 
acuminate, .smooth ; abortive floret 1-valved. 
Var. siylvatf'icumfCnlm branched at the ba^ie, 
very slender ; leaves linear. 1-2 f. 
fus" coin' bens, (Au.) racemes linear, vir- 
gate ; glumes clavate, colored, hairy under 
the divisions of the panicle. S. 
ama'Tum, (Oc. 2/.) veiy glabrous ; leaves 
thick, glaucous, very bitter ; panicle ap- 
pressed ; glumes acuminate. 2-3 f. S. 
aitgiistifo'liiim, panicle few-flowered, ex- 
panding ; leaves scattered, linear-lanceo. 
late, glabrous beneath, sparingly ciliate. 
1-3 f. S. 
PAPA'VER. 12—1. (Fapaveracece.) [From 
■pappa, pap, so called because nurses mixed 
this plant in children's food to make them 
sleep.] 
somnif'erum, (opium poppy, J. @.) calj'X 
and capsule glabrous ; leaves clasping, 
ga.shed, glaucous. Ex. 
rhcfas, (red coi-n-poppy, r. J. @.) cap- 
sules glabrous, sub-globose ; stems a^any- 
flowered, pilose ; leaves gash-pinnatifid. 
Ex. 
mulicau'le, (y. $ .) capsule hispid ; scapa 
1 -flowered, naked, hispid ; leaves sub -pin- 
nate; leafets lanceolate, lower ones some- 
what gashed. 
brnctea'tn, (r. J.) capsules smooth ; stem 
1 -flowered, rough; leaves scabrous, pinnate, 
serrate ; flowers subtended by leafy bracts. 
3 f Ex. 
du'biiim, (r. w Au. @.) leaves pseudo- 
pinnate ; segments lance-oblong, pinnatifid, 
incised, sessile, decurrent; stem with spread- 
ing hairs ; peduncles with appres.sed bri.stly 
hairs ; cap.sules obovoid-oblong, smooth. 
Naturalized in Chester co.. Pa. 1-2 f. 
PARIETA'RIA. 19—4. (Urticece.) [From a 
Latin word signifying wall, from its growing 
on old ruins.] 
petiuiylva'idca, (pallitory J, @.) leaves 
lance oblong, veiny, opake, dotted ; involu- 
crum 3-leaved, longer than the flower. 
12-1. 5 i. 
Jiorida'na, (J.) leaves ovate, nearly round, 
obtuse, opake, dotted ; flowers clustering 
as long as the involucrum ; stem assurgent. 
12-18 i. S. 
PARME'LIA. 21—5. (.Algm.) IFxom parme 
shield, and eilo, to enclose.] 
capera'ta, (shield lichen,) frond orbicu 
lar, pale yellow, becoming green, rugcee, 
at length granulated, dark and hispid be- 
neath ; lobes plicate, sinuate-laciniate, 
roundish, somewhat entire; receptacles 
scattered; ma: gin incurved, entire, ai 
length pulverulent. On old timber, &c. 
PARNAS"SIA. 5—4. {Saxifraga.) [Frora 
Mount Parnassus, the seat of the Muses.] 
amenca'na, (flowering plantain, w. y. p 
Ju. li.) leaves radical, (often a leaf on the 
scape,) heart orbicular, 5-!) nerved ; necta- 
ries 5, each divided into 3 iilame'its ternii 
