XYRIS— ZOSTER A. 
187 
XV'HIS. 3—1. (Junci.) [From a Greek word, 
signifying pointed.] 
caroH>i"ia'na, (yellow-eyed grass, E . y. 
An. 14..) leaves linear, grass-like; stem or 
scape two-edged ; head ovate, acute ; scales 
obtuse. 9-18 i. 
brevifo'lia, (y. Au. 2^,) leaves subulate- 
ensiform, short ; interior valves of the calyx 
shorter than the exterior, somewhat gash- 
toothed. 12 i. 
jna"cea, (M. 2i.) leaves terete, hollow, 
acute ; scape terete, sheathed at the base ; 
culyx about as long as the roundish bracts; 
Head oval. 6-12 i. iS 
in"dica, (y. J. leaves long, grass-like, 
tortuous ; scape tortuous ; heads globose ; 
scales nearly round, obtuse. S. 
Jimbria.'f.a, (feathered xyris, J. 14-.) heads 
lax-imbricate : calyx much longer than the 
bracts, fimbriate ; leaves long, sword-shaped. 
2 f. 
YUCCA. 6—1. iUliacetB.) [From /uco, the 
Indian name. <S".] 
Jilttmeido'sa, (silk-gra.ss. w. Au. 2i-) 
Bteinle.ss ; leaves lanceolate, broad, entire, 
filamentose on the margin ; stigmas re- 
curved, spreading. 2-5 f. 
gloria' sa, (w. Au. 2i.) caulescent, branch- 
ing ; leaves broad-lanceolate, plaited, entire ; 
petals lanceolate. 2-4 f. 
aliLifo'lia, leaves lance-linear, with callous 
crenatures, rigid. 10-12 f. 
ZA'MIA. 20—12. (Coniferem.) iFrom zemia, 
darriiige or loss, in allusion to the fact that 
tlie stuminate aments produce no seed.] 
iiit.egnfo'lia, (I7.) frond pinnate; leafets 
laiif.eolate, roundish-obtuse, attenuate at 
ba.-;e, minutely serrate toward the apex; 
stipe glabrous, somewhat 4-cornered. S. 
spira'lis, fiowers dicBcious ; leaves rigid, 
coiiaceou.s, erect; nut oblong, erect, scaly, 
very hard. A native of New South 
Wales. 
ZANNICHEL"LIA. 19—1. (Naides.) 
paliis"tris, anthers 4-celled ; stigmas en- 
tire ; [lericarps 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 fili- 
form; leaves entire. Salt-marsh ditches. 
ZAPA'NIA. 13—2. (ScrophularicB.) 
nodijlo'ra, (b-w. Ju. 2^.) leaves ovate 
wedge-form, serrate above ; spikes solitary, 
in long lilitbrm peduncles, forming conical 
heads ; stem herbaceous, creeping, 6-8 
hiches long, procumbent. 
hmceula'ta, leaves linear-lanceolate; 
spikes solitary. Banks of streams. 1 
ZE'A. 19—3. (Gramincce.) [An ancient Greek 
name.] 
mays, (Indian-corn, y-g. Ju. @.) leaves 
lance-linear, entire, keeled. jS. 
ZIGADE'NUS. 6—3. {Junci.) 
glaberri'mus, (w. J. li-) scape leafy, 
bracts ovate, acuminate ; petals acuininate , 
leaves long, recurved, channelled. 2-4 f. 
eV'egans, (w. J. 11) scape nearly naked; 
bracts linear ; petals ovate, acute. S. 
ZIN"NIA. 17—2. {Corymlnfer<s.) 
viola' cea, (r-p. Ju.) leaves ovate-acute, 
sessile, sub-crenate ; chaff imbricate-serrate. 
eV'egans, (p. J. ^.) heads stalked ; leaves 
amplexicaul, cordate, ovate, sessile, oppo- 
site ; stem hairy ; scales serrate. 2 £ 
Mexico. 
muUiJio'ra, (r. S. 0.) flowers peduncled ; 
leaves opposite, sub-petioled, lance-ovate. 
S. 
ZIZA'NIA. 19-6. {Graminea.) 
aquaf'ica, (wild rice, Au. 11) panicle 
pyramidal, divaricate and sterile at the 
base, spiked and fertile above ; pedicels 
clavate ; awns long ; seed linear. In water. 
milia'cea., (Au. 2i.) panicle effuse, pyra- 
midal ; glumes short-awned ; staminate and 
pistillate flowers intermingled; style 1; 
seed ovate, smooth ; leaves glaucous. 6-10 f. 
In water. 
ZI'ZIA. 5—2. {UmheJlifera.) 
corda'ta, (y. J. Z^.) radical leaves undivi- 
ded, cordate, crenate, petiolate, cauline ones 
sub-sessile, ternate ; segments petiolate, 
ovate, cordate, serrate ; partial involucre 
1-leaved. 12-18 i. Fruit black. Canada 
to Florida. 
au'rea, (golden alexander.^s, y. J. 11) 
leaves biternate, shining; leafets lance- 
oval ; umbels with short peduncles. 1-2 f. 
tntegerri'ma, (y. J. 11.) 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. 
ZI'ZrPHUS. 5-1. (Rhamni.) 
volu'hihs, (g y. Ju. ZX-) unarmed; leaves 
ovate, ribbed, entire ; umbels axillary, ped 
uncled ; stem twining. jS. 
ZOR"NIA. 16—10. {LeguminoscE.) 
tetrafhyVla, (y. Ju. If.) leaves digitate; 
leafets 4, lanceolate, glabrous; spikes axil- 
lary, peduncled ; flowers alternate, 2-bract- 
ed ; bracts roundish. iS. 
ZOS"TERA. 19—1. (Naides.) [From zoster, 
a girdle.] 
mari'na, (sea eel grass, Au. 11) leaves 
entii-e ; stem terete ; flowers very small 
leaves long. In salt water. 
