ZANNICHELLIA—ZOSTERA. 
glorio'sa , (w. Au. 7)..) caulescent, branching; leaves broad-lanceolate, plaited^ 
entire ; petals lanceolate. 2-4 f. 
alnifo'lia , leaves lance-linear, with callous crenatures, rigid. 10-12 f. 
ZANNICHELLIA. 19—1. ( Naidcs .) 
jpalustris , anthers 4-celled ; stigmas entire ; pericarps toothed on the back; 
stem long, filiform; flowers small, axillary. Horn pond-weed. Ditches. 
ZANTIIORHIZA. 5—13. ( Ranunculaceca .) [From xanlhos, yellow*, riza , root.] 
apiifo'lia , (parsley yellow-root, p. Ap. fi>.) stem simple; leaves 3-ternate ; pe¬ 
tioles dilated and clasping at the base ; racemes compound, below the leaves. 
1-3 f. 
ZANTHOXYLUM. 21—5. ( Terebintace&.y [From xanthos, yellow, zulon, wood.] 
fraxiri'eum , (prickly-ash, toothache-bush, g. w. M. fy) prickly; leaves pin¬ 
nate ; leafets lance-oval, sub-entire, sessile, equal at the base ; umbels axil¬ 
lary. 8-12 f. 
ZAFAN1A. 13—2. ( Scrophularicz .) 
nodijlo'ra , b-w. Ju. 9|.) leaves ovate wedge-form, serrate above; spikes soli-* 
tary, in long filiform peduncles, forming conical heads; stem herbaceous^ 
creeping, 6-8 inches long, procumbent. 
lanceola'ta , leaves linear-lanceolate, spikes solitary. Banks of streams. 
ZEA. 19—3. (GraminecB.) [An ancient Greek name.] 
mays, (Indian-corn, y-g. Ju. leaves lance-linear, entire, keeled. S'. 
ZIGADENXJS. 6—3. ( Junci .) 
glaberri'mus , (w. J. flj-.) scape leafy ; bracts ovate, acuminate ; petals acumi¬ 
nate ; leaves long, recurved, channelled. 2-4 f. 
ZINNIA. 17—2. ( Corymhiferce ,.) 
viola'cea , (r-p. Ju.) leaves ovate-acute, sessile, sub-crenate ; chaff imbricate- 
serrate. 
ZIZANIA. 19—6. ( Graminece .) 
aquaVica , (wild rice, Au. A}..) panicle pyramidal, divaricate and steril at the 
base, spiked and fertile above ; pedicels clavate; awns long; seed linear. In 
water. 
ZIZIPHUS. 5—1. ( Rhamni .) 
volu'bilcs , (g-y. Ju. %.) unarmed; leaves ovate, ribbed, entire; umbels axil¬ 
lary, peduncled ; stem twining. S. 
ZORNIA. 16—10. ( Leguminoscz .) 
tetraphylla , (y. Ju. flj..) leaves digitate ; leafets 4, lanceolate, glabrous; spikes 
axillary, peduncled ; flowers alternate, 2-bracted ; bracts roundish. S. 
ZOSTERA. 19—1. ( Naides .) [From zoster, a girdle.] 
mari'na , (sea-eel grass, Au. flj..) leaves entire; stem terete; flowers very 
small; leaves long. In salt water. 
