H YDRAS T IS— H Y? O XIS. 
419 
slightly cordate at base, acaminate, coarse- 
ly toothed, glabrous underneath; cymes 
generally radiate. 
quercifo'lia, (w-r. M. J.) leaves oblong, 
sinuate and lobed, dentate, tomentose un- 
derneath ; cymes radiate, paniculate. 4-5 f. 
HYDRAS"TIS. 1-2— 12. {Ranunculaccm.) [From 
urfor, water.] 
canaden"sis, (yellow pucoon, w-r. A p. 
H.) stem with two opposite leaves above ; 
(eaves petioled, emarginate at the base, 
palmate, serrate, gashed ; peduncle termi- 
nal, solitary, 1-flowered ; roots yellow. 
Used by the Indians as a dye. 
UY'DROCHA'RIS. 20—9. [Hydrocharides.) 
[From udor, water, and chaiis, grace, lliis 
little plant being considered as ornanientitl 
to placid waters.] 
spongio'sa, monoecious, leaves floating, 
round, cordate, reticulate underneath, with 
vesicles at base. 
HYDROCHLO'A. 19—6. (Graminem.) [From 
udor, water, and elaia, oil, because the leaves 
have a very oily appearance.] 
fiui'tans. (Ju. 21/.) floating in water, culm 
long, slender, branching ; leaves linear, Hat; 
spike solitary, axillary, setaceous ; about 
4- fiowered. 
HYDROCOT"YLE. 5—2. (UmbellifercB.) [From 
udor, water, kotule, a cavity.] 
umbella'ta, (w. M. 11.) leaves peltate, 
crenate, emarginate at base ; umbels many- 
flowered, on long peduncles. 
vnlga'ris, (g-w. J. 14.) leaves orbicular, 
peltate, slightly crenate ; scape interrupted- 
ly spiked, few-flowered. 
ratmnculoi'des, (Ju. 2^.) creeping; glab- 
rous; leaves orbicular-reniform, somewhat 
5- lobed ; lobes obtuse, crenate, the middle 
one smaller and more distinct ; umbels sub- 
capitate, few-flowered ; pedunculate, 5 to 
10-flowered. 
america' na, root tuberous ; stem filiform, 
with creeping suckers ; leaves reniform, 
slightly 7-lobed, crenate ; umbels 4-6 flow- 
ered, axillary ; petals greenish-white. Wet 
places. 
interrup"ta, stem creepiag at the joints ; 
leaves peltate; flowers pinnate, white, in 
small umbels, much shorter than the petioles. 
Mai'sh penny- wort. 
HYDRO'LEA.. 5—2. (Convolvuli.) [From 
udor. water, elaia oil.] 
quadrivaVvis, (b. Ju. H-) spinose, pilose ; 
leaves long-lanceolate ; flowers nearly ses- 
sile, axiUary. 
corymbc'sa, without spines, flowers ter- 
ninal. 
spino'sa, leaves lanceolate, hirsute ; flow- 
ers terminal. S. 
HYDROPEL"TIS. 12—12. {Ranunculacea.) 
[From udor, water, pelte, a shield.] 
jmrpufrea, (water-shield, p. Au. 1/.) leaves 
peltate, tinged with purple; peduncles sol- 
itary, 1-flowered. Whole plant covered 
with a viscid gelatine ; stem long, floating. 
HYl)ROPHYL"LUM. 5—1. {Boraginew.) 
[From udor, water, phyllum, a leaf.] 
virgini'cum, (water leaf, w. J. 2^.) smooth- 
ish ; leaves pinnatifid and pinnate; se^ 
men^ with deep serratures; clusters ot 
flowers crowded; peduncles larger than 
the petioles. 18 i. 
cunaden"se, somewhat hairy; leaves 
large, about 5-7-lobed ; flowers blue and 
white, in clusters. 
linea're. (A p. 2^.) pilose; leaves linear 
racemes elongated. S. 
HYOSCYA'MUS. 5—1. (SolancR.) [From «f#, 
a swine, and kuamos, a bean, because the 
plant is unsightly.] 
ni'ger, (her>bane, y-p. Ju. $ .) leaves 
clasping, sinuate ; flowei's veiny, sessile. 
Introduced. 
HYPER"ICUIVT. 12—5. (Hi/pericm) [From 
uper, over, eikon, evil spirits, because it was 
thought to have power over such.] 
corymbo'siim, (y. Ju. l^.) erect, glabrous 
darkly-punctate; stem terete, branching 
leaves clasping, oblong-oval, obtuse ; cor 
ymbs terminal, brachiatc, dense-flowered 
divisions of the calyx lanceolate, acute 
18-24 i. 
parvijlo'rnm, (y. Ju. 14-.) erect, small, 
glabrous ; stem dichotomous-ramose, .some- 
what 4-sided ; leaves ovate oblong, sub- 
cordate, obtu.se, nerved, ses.sile ; panicles 
terminal, dichotomous corymbed ; petals 
shorter than the lanceolate calyx. 6-12 i. 
perfora'tnm, (y. J. 14-) erect, branching; 
stem 2-edged ; leaves oblong, obtuse, trans- 
parently punctate ; panicle terminal, bra- 
chiate, leafy ; petals twice as long as the 
acute, lanceolate calyx; 3 styles. St. John's 
wort. 
virgiii"icum, (p. Au. 2^.) flowers with 9- 
IS-stamens, di.stinctly arranged in 3 parcels, 
and separated by nectaries ; 3 styles ; leaves 
oval, obtuse, clasping; stem compressed. 
1-2 f. 
ascyroi'des, smooth ; stem square, winged 
at the base ; leaves ses.sile, acute ; styles 
free, as long as the stamens; flowers and 
leaves large ; capsules nearly as large aa 
nutmegs, yellow. River banks. 
puticla'tnm, stem terete ; leaves sub- 
clasping ; flowers in dense corymbs ; styles 
3, longer than the stamens. Whole plant 
dotted with black. 
canade)i"se, erect, small, few-flowered; 
stem 4-8ided, dichotomous above ; leaves 
sessile, linear ; capsules red. 9 19 i. 
kulmia'num, (laurel-leaved hypericum,) 
shrubby, very branching corymbs terminal. 
3-4 f. Cultivated as ornamental. 
proliJi"cum,\edLves more narrow than the 
preceding; flowers smaller, numerous. 
Cultivated. 
HYPOPEL"TIS. 21—1. (Filices.) [From 
upo, under, and pelte, a shield.] 
obtu'sa, (Au. 24^.) fronds 8-14 inches, high, 
bi-pinnate ; divisions sub-remote ; segments 
oblong, the lower ones crcnate-dentate ; 
rachis pubescent above. Rocky woods. 
HYPOX"IS. 6-1 (Narcissi.) 
erec"ta, (star-grass, y. Ju. 14) pilose; 
scape 2-3-flowered ; leaves lance-linear ; 
divisions of the corolla lance-oblong. Var 
gramin"ea,h?LB longer and narrower leaves ; 
more flowers, longer lance linear divisions 
to the corolla, and altogether a moregrassv 
appearance. 
