XYRIS— ZOSTER A. 
493 
XT?'RIS. 3—1. (Junci.) [From a Greek word, 
signifying pointed.] 
carolin"ia'na, (yellow-eyed grass, E. y. 
Au. 11 .) leaves linear, grass-like ; stem or 
scape iwo-edged ; head ovate, acute ; scales 
obtuse. 9-18 i. 
brevifo'lia, (y. An. 2^.) leaves subulate- 
ensiform, short ; interior valves of the calyx 
uhorter than the exterior, somewhat gash- 
toothed. 12 i. 
jitn"cea, (M. 2i.) leaves terete, hollow, 
acute ; scape terete, sheathed at the base ; 
calyx about as long as the roundish bracts; 
Head oval. 6 12 i. 
in'dica, (y. J. 2^.) leaves long, grass-like, 
tortuous ; scape tortuous ; heads globose ; 
scales nearly round, obtuse. S. 
Jimbria'fa, (feathered xyris, J. IX .) heads 
lax-imbricate ; calyx much longer than the 
bracts, fimbriate ; leaves long, sword-shaped. 
2 f. S. 
YUCCA. 6—1. (Liliacete.) [From Juca, the 
Indian name. ^^] 
Ji.tame?ito'sa, (silk-grass, w. Au. 21 
ZE'A. 19— 3. (GraminecB.) [An ancient Gieek 
name.] 
moTfs, (Indian-corn, y-g. Ju. |^.) leaves 
lance-linear, entire, keeled. S. 
ZIGADE'NUS. 6—3. (Junci.) 
gliiberri'nius, (w. J. 2/.) scape lenity, 
bracts ovate, acuminate; petals acumijiate, 
leaves long, recurved, channelled. 2-4 f. 
el"egans, (w. J. 2^.) scape nearly naked* 
bracts linear ; petals ovate, acute. S. 
ZIN"NIA. 17—2. (CorymbiteroE.) 
vinla'cea, (r-p. Ju.) leaves ovate-acute, 
sessile, sub-crenate ; chaff imbricate-serrat«». 
eV'egans, (p. J. ^.) heads stalked ; leaves 
amplexicaul. cordate, ovate, sessile, oppo- 
site ; stem hairy ; scales serrate. 2 f 
Mexico. 
mitUiJlo'ra, (r. S. @.) flowers peduncled , 
leaves opposite, sub-petioled. lance-ovate. 
ZIZA'NIA. 19-6. (GramineoR.) 
oquafka, (wild rice, Au. 11) panicle 
pyramidal, divaricate and sterile at the 
stemless: leaves lanceolate, broad, entire, t>af^e, spiked and fertile above; pedicels 
ulamentose on the margin ; stigmas re- 
curved, spreading. 2-5 f. 
glorio'sa, (w. Au. 21.) caulescent, branch- 
ing ; leaves broad-lanceolate, plaited, entire ; 
petals lanceolate. 2-4 f. 
alaifo'lia, leaves lance-linear, with callous 
crenatures, rigid. 10-12 f. 
ZA'MIA. 20—12. (ConiferciE.) [From 2emia, 
daiiiiige or loss, in allusion to liie tact tliat 
the stuminate ameiits pj-oduoe no seed.] 
iiilegrifu'lia, ( ^ .\ frond pinnate ; leafets 
lanceolate, roundish obtu.se, attenuate at 
ba.se, minutely serrate toward the apex , 
stipe glabrous, somewhat 4-cornered. 
spira'lis, liowers dia^cious ; leaves rigid, 
coriaceous, erect ; nut oblong, erect, scaly, 
very hard. A native of New South 
Wales. 
ZANNICHEL"LIA. 19-1. (Naides.) 
palns"tris, anthers 4-celled ; stigmas en- 
tire ; pericarps toothed on the back ; stem 
long, filiform ; flowers small, axillary. Horn 
pond- weed. Ditches. 
interme'dia, (false pond-weed, Ju. ^.) 
anther 2-celled ; stigmas dentate crenate ; 
seed smooth, entire on the back ; stem Hli- 
form; leaves entire. Salt-marsh ditches. 
ZAPA'NIA. 13—2. (ScrophularicE.) 
nndijio'ra, (b-w. Ju. 2X.) leaves ovate 
wedge-form, serrate above ; spikes solitary, 
clavate ; awns long ; seed linear. In water. 
rnilia'cea, (Au. 24.) panicle effuse, pyra- 
midal ; glumes short-awned ; staminate and 
pi.stillate flowers intermingled ; style 1 , 
seed ovate, smooth ; leaves glaucous. 6-10 f. 
In water. 
ZrZIA. 5—2. iUmbelliferce.) 
corda'ta, (y. J. 2^.) radical leaves undivi- 
ded, cordate, crenate, petiolate, cauline ones 
sub-se.ssile, ternate; segments petiolate, 
ovate, cordate, seirate ; partial involucre 
1-leaved. 12-18 i. Fruit black. Canada 
to Florida. 
au'rea, (golden alexanders, y. J. 24!.) 
leaves biternate, shining ; leafets lance- 
oval ; umbels with short peduncles. 1-2 f. 
mtegerri'ma, (y. J. 2L(.) very glabrous; 
leaves biternate, sub-glaucous, lower ones 
thrice ternate, upper ones twice ; leafets 
oblique, oval, entire ; umbels with elonga- 
ted peduncles. 12-18 i. Mountains. 
ZrZIPHUS. 5-1. (Rhamni.) 
vobi biles, (g-y. Ju. 2j[.) unarmed; leaves 
ovate, ribbed, entire ; umbels axillary, ped 
uncled ; stem twining. »S. 
ZOR"NIA. 16—10. (Leguminosm.) 
lctraphijl"la, (y. Ju. 2^.) leaves digitate 
leafets 4, lanceolate, glabrous; spikes axil- 
lary, peduncled ; flowers alternate, 2-bract- 
ed ; bracts roundish. iSi. 
in long tihlorm peduncles, forming conical j Z0S"T£RA. 19—1. (Natdes.) [From zoster, 
heads ; stem herbaceous, creeping, 6-3 a girdle.] 
inches long, procumbent. man'na, (sea eel grass, An. 2X) leaves 
Imiceola ta, leaves linear-lanceolate ; entire ; stem terete ; fl--»wers very snja.i 
spikes solitary. Banks of streams. ■ leaves long. In salt water 
