180 
ULVA-UVULARIA. 
f. Flowers appear before the leaves, a mag- 
niiicent tree. 
fv.V'va, (slippery-elm, M. Ap. 1? .) branch- 
es scabrous, white ; leaves ovate-oblong ; 
very acuminate, pubescent on both sides ; 
buds tomentose, with a thick tawny wool ; 
flowers sessile, smaller than the white-elm ; 
leaves larger; stamens often 7. The mu- 
cilage of the inner bark medicinal. 
nemornVis, (river-elm, Ap.^ .) leaves ob- 
long, somewhat glabrous, equally .serrate, 
nearly equal at base ; flowers se.ssile. 
racemo'sa, ( Ip .) flowers in racemes ; pedi- 
cels in distinct fascicles united at their ba- 
ses ; leaves ovate, acuminate, auriculate on 
one side, doubly serrate, glabrous above, 
minutely pubescent beneath ; stamens 7-10 ; 
etigmas 2, recurved. 
ala'ta. (whahoo. Mar. branches on 
each side winged with a cork-like bark , 
leaves nearly se.ssile, oblong-oval, acute, 
doubly serrate, nearly equal at base ; fruit 
pubescent, ciliate. 30 f, S. 
UL"VA. 21—4. {Algce.) 
lin"za, frond lance-linear ; margin undu- 
late-crisped ; about an inch broad, tapering 
at the base, green. Seashore. 
URASPER';MUNT. 5—2. (UmheUifercB.) [From 
oura, a tail, and sperma, seed.'] 
clayto' id, (sweet cicely, J. 11) leaves 
compound, hairy; leafets gash-toothed ; um- 
* bels axillary and terminal, about 5-rayed ; 
Btyle as long as the villose germ, filiform, 
reflexed. 2 f. 
URE'DO. 21—6 (Fungi.) [From mjo, to burn, 
on account of its burnt color.] 
linea'ris, (yellow grain-rust, J. @.) linear, 
very long, stained yellow, at length but ob- 
scurely colored. On the culms and leaves 
of barley, oats, rye, wheat, &c. 
UR"TICA. 19-4. (UrticecE.) [From urendo, 
burning ; on account of the sensation it 
causes.] 
dio'ica, (common nettle, J. 2i.) leaves 
opposite, cordate, lance-ovate, coarsely ser- 
rate ; flowers dioecious ; spikes panicled, 
glomerate in pairs, longer than the petioles. 
2-3 f. 
fu'mila, (rich-weed, .Ju. @.) leaves op- 
posite, ovate, acuminate, 3-nerved, serrate ; 
lower petioles as long as the leaves ; flow- 
ers moncEcious, triandrous, in clustered 
corymbs, shorter than the petioles; stem 
succulent, almost transparent. 6-12 i. Wet 
grounds. 
vj rem, (stinging nettle, J. @.) stem his- 
p il ; leaves opposite, elliptic, about 5-nerv- 
fcil, acutely serrate ; spikes glomerate, in 
p.tirs. 1214 i. 
caiifjdeu"iiis, (Canada nettle, Ju. 2^.) 
leaves cordate-ovate, acuminate, hispid on 
both sides ; panicles axillaT-y, mostly in 
pairs, divaricately branched ; the lower 
Btaminate ones longer than the petioles; 
upper pistillate ones elongated; stem his- 
pid, stinging. 5-6 f. Var. <fiva?76v/to. leaves 
smooth ; panicles solitary, spreading. 4-6 f. 
chamcedroi'des, (Mar. ^.) stem glabrous ; ' 
leaves opposite, eub-sessile, ovate, serrate, j 
fltrigose beneath : clusters of flowers axil- 1 
lary, sessile, sub-globose, reflexed , prickles 
stimulant, white. 4-6 i. S. 
reticnlafta, (r-y.) leaves deep green. A 
native of Jamaica. 
\ IJS^NEA. 21-5. (Filices.) 
plicn'ta, frond pendulous, smooth, pale ; 
branches lax, very branching, sub-fibrous ; 
the extreme ones capillary ; receptacles 
flat, broad, ciliate ; the hairs very slender 
and long. On trunks and branches of trees , 
most common on dry, dead limbs of ever- 
greens, fi'om which it often hangs in long, 
green locks, 
UTRICULA'RIA. 2—1. {Scrophularios.) IVxom 
utriculus, a little bladder.] 
vnlga'riff, (bladder- wort, y. Au. 2^.) float- 
ing ; stem submerged, dichotomous; leaves 
many-parted, margins bristly ; scape .5-9- 
flowered ; upper lip of the corolla entire, 
oroad, ovate ; spur conical, incurved ; flow- 
ers in racemes. Ponds. 
striata, floating; scape 2-6-flowered, 
rootfurni.shed with air-vessels ; corolla large, 
yellow striate with red ; spur much shorter 
than the lower lip. 
pnrpu'rea, sen pes axillary, generally 2 or 
3 inches long; liowers purple. Ponds on 
mountains. Mas< to Flor. 
injla'tn., (y. An. 1^.) radical leaves ver- 
ticilliite, inflated, pinnatifid at their ex- 
tremities ; lower hp of the corolla 3-lobed 
spur deeply emarginate. Ponds. 
stria' ta, (y. J. ll) floating; scape 2-6- 
flowered ; upper lip of the corolla ovate- 
round, sub-emarginate, margin waved , 
lower lip 3 lobed, sides reflected ; spur 
straight, obtuse, shorter than the lower lip. 
Swamps. 
£^ib"b<i, (y. Ju. 11) floating; scape mostly 
2-flowered ; spur shorter than the lower 
lip of the corolla, obtuse, gibbous in the 
middle. 1-3 i. Ponds. 
cornn'ta, (y. Au. ZJ].) scape rooting, erect, 
rigid ; flowers 2-3, sub-sessile ; inferior lip 
of the corolla very wide 3-lobed ; spur very 
acute, lengthened out longer than the co 
rolla. 10-12 i. Wet rocks. 
persona' ta, (y. @.) scape rooting, many 
flowered ; upper lip of the corolla emargin- 
ate, reclined ; lower one small, entire, pal- 
ate large ; spur linear-subulate, acutisb. 
Bogs. 
seta'cea, (y. J. 11) scape rooting, filiform; 
upper lip of the corolla ovate, lower one 
deeply 3-lobed ; spur subulate, entire. 3-6 
i. Swamps. 
inte'gra, (y. %) floating; scape 1-2-flow- 
ered ; upper hp of the corofla sub-3-lobed ; 
lateral lobes sub-involute ; lower hp entire ; 
spur nearly equalling the lower hp. S. 
bijlo'ra, (y. Ju.) spur subulate, obtuse, 
about as long as the lower lip ; scape about 
2-flowered ; leaves setaceous. S. 
UVULA'RIA. 6—1. (LiliacecB.) [From uvula, 
a membrane of the throat, the soreness of 
w hich this is supposed to heal.] 
ptrfolia'ta, (bell- wort, y. M. 11) leaves 
perfoliate, oval-obtuse (lance-linear or oval- 
oblong in the young state) ; corolla bell- 
liliaceous, scabrous or granular within ; aa 
ther cuspidate. 8-12 i. 
