PLATYSPETALUM— PODOSTEMUM. 
449 
PIATYSPET"ALUM. 14—1. (Crucifercc.) 
[From platus, broad, peialon, leaf.] 
pm-prtras"cens, stig^iaa 2-lobed spread- 
ing; style manifest ; scape na^ea, i leaved, 
and pubescent ; silicles svib-glabrous. 
du'bium, stigma undivided, sub-sessile ; 
silicles and scapes pubescent. 
PLATYSPER"MUM. 14—1. {Cructfera.) 
[From platus, broad, sperma, seed.] 
scapige'rum, (w. Mar. Ap. root sub- 
fusiform, scarcely fibrous ; leaves all radi- 
cal, spreading, sub-runcinate pinnatifid ; 
lobes mostly acute ; lov^^er ones gradually 
smaller, 'ittenuated into a petiole ; scapes 
digitate, erect, simple, very glabrous, 1- 
flowered ; flowers small, erect. 
PLECTRI'TIS. 3—1. (Dipsacece.) [From;j^A;- 
tron, a spur, alluding to the form of the 
corolla.] 
conges"ta, (r. 0.) glabrous ; flow^ers in a 
dense w^horl ; bracts many-cleft, in subulate 
divisions. Var. m'wor, leaves very narrow. 
PLEE'A. 9—2. {Jwici.) [From a Greek 
word signifying abundance, from tlie num- 
ber of stamens.] 
teniiifo'lia, (y. r. very glabi-ous ; 
leaves very narrow-ensiform ; sheaths of 
the spike 1-flowered. 1-2 f. 
PO'A. 3—2. (Gravnnea.) [From a Greek 
word, signifying gra.ss.] 
annn'a, (Ap. ^.) panicle sub-secund, 
divaricate ; spikelets ovate-oblong, 5-flow- 
ered ; florets free ; culm oblique, compress- 
ed ; root fibrous. 6 8 i. 
praten"sis, (J. 2^.) panicle diffuse; up- 
per leaves nmch shorter than the smooth 
sheaths ; florets acute, 5-nerved, webbed at 
the base ; stipule short truncate, root creep- 
ing. 2-3 f. 
aquaf'ica, var. amcinca'na, (Au. If.) pan- 
icle erect, semi-verticillate, diffuse;branches 
flexuou.s, smooth ; spikelets linear, 6-8-flow- 
ered ; florets ovale obtuse, free ; leaves 
broad-linear, smooth ; sheaths smooth. 4-5 f. 
trivia' Us, (.Ju. 11.) panicle equal, diffuse ; 
spikelets oblong-ovate, about 3-flowered ; 
florets webbed at the base, 5 nerved ; culm 
and sheaths roughish ; stipules oblong. ; root 
creeping. 2-3 f. 
comprefs' sa, (blue-grass, Ju, 11.) panicle 
contracted, somewhat secund ; spikelets 
oblong, 3-6-flowered ; florets webbed ; 
glumes nearly equal ; culm oblique, com- 
pressed ; root creeping. Var. sylves" ttis, 
panicle loose, spreading; spikelets 2-3 flow- 
ered; culm slexider, nearly erect. 12-18 i. 
scroti' na, (J. 11.) panicle elongated, dif- 
fuse, at length somewhat secund ; spikelets 
.ance-ovate, 2-3 flowered; florets a little 
webbed at the base, yellow at the tip, ob- 
scurely 5-nerved ; root creeping. 2 3 f 
minor a' lis, [11.) panicle attenuated, weak ; 
branches flexuous ; spikelets ovate, about 
3-flowered ; florets loose, slightly webbed, 
acute, obsoletely nerved ; stipule almost 
«vanting. 2 f. 
nerva'ta, (J. 2/.) panicle equal, diffuse ; 
branches weak, at length pendulous ; spike- 
.ets 5-fiowered ; florets free, conspicuously 
-nerved, obtuse. 3-4 f. 
ohtu'siu (Au. panick ovate, contract- 
ed; spikelets ovate, tumid, 5-7-flowered. 
florets free ; glumes scarious ; palea ovat«, 
smooth, obtuse; lower one indistinctly 7- 
nerved ; leaves as long as the culm, with 
the sheaths smooth. 2-4 f. 
canaden"sis, (Ju. 2|.) panicle large, ef- 
fuse ; branches semi-verticillate, flexuous 
at length pendulous ; spikelets ovate, tu 
mid, 5-8 flowered ; florets free ; lower pa 
lea acutish, 7-nerved ; upper one very ob 
tuse ; stamens 2. 3-4 f. 
capilla'ris, (Au. @.) panicle very largo 
loose spreading, capillary ; spikelets 3-flow 
ered, ovate, acute ; florets free ; cub 
branched at the base ; leaves hairy. 12 i. 
peclina'cea, (Ju. 0.) culm cespitose, ob 
lique ; leaves hairy at the base ; panicle 
capillary, expanding, pyramidal, hairy in 
the axils ; spikelets linear, 5-9-flowered , 
florets free, acute, upper palea persistent 
8-12 i. 
rej/'tans, (Au. 0.) diojcious ; ,nlra 
branched, creeping ; panicle fasc led , 
spikelets lance-linear, 12-20-tiowered , flo- 
rets acuminate. Var. coespito' sa, culn. very 
short, cespitose ; spikelets much crowded 
oblong. 8 i. 
eragros"tis, (.lu. %.) panicle equal, spi ad 
ing; lower branches hairy in the avils 
spikelets linear-lanceolate, 9-15-flowered 
florets obtuse ; root fibrous. 12-18 i. 
ten"uis, (Au.) panicle branching, expand 
ing, capillary; spikes 3-flowered, glabrous 
long peduucled ; leaves linear, very long. 
12-18 i. S. 
j)arviJlo'ra, (J. 2^.) panicle dift'use, capil- 
lary ; spikelets smaU, generally 3-fiowt;red ; 
flowers obtusish, striate, caducous ; leaves 
distichous, flat. 12-18 \. S. 
coiifer"ta, panicles terminal and axillary, 
erect, compressed, with clustered flowers; 
spikelets 8-fiowercd, glabrous. 2-3 f. S. 
augustifo'lia, (M. 2^.) leaves linettr, invo 
lute ; panicle somewhat crowded ; spikes 
lanceolate, acute, 4-flowered ; flowers vil- 
lose at the base. 1-2 f. 6'. 
ni'tida, (Ju.) stem erect, very glabrous , 
panicle large, ditt'use, capillary, sub-verti- 
cillate ; peduncles long ; spikes lanceolate, 
8-flowered. 1 f. <S'. 
rigida, (M. 2^.) panicle lanceolate, 
little branched, secund ; branches alternate, 
secund. 2 4 i. jS. 
uiroi'dea, panicle attenuated, erecl 
branches capillary, loose, semi-verticillate , 
leaves with very long sheaths, short and 
acute ; spikelets oblong, obtuse, sub-sessi!e, 
4-6-flowered ; glumes unequal, shorter thaa 
the palea. 4-5 f 6'. 
PODOPHYL"LUM. 12—1. (Rominculacef^., 
[Fiom pous, fotit, and phulion, leaf, on ac 
Count of the shape of its leaf.] 
pelta'tum, (wild mandrake, may-apple 
w. M. !(..) stem terminated with 2 peltate, 
palmate leaves ; flower single, inserted in 
the fork formed hy the petioles of the leaves. 
Sometimes the plant is 8-leaved, aud the 
flower inserted on tne side of one of the 
petioles. 1-2 f. 
PODOS"TEMUM. 19—2. (Arotdeee.) 
ccrutopkyl'liLm, (thread foot, J u. If.) etetn 
