HYDRANGEA-HYPOXIS. 105 
SIYDRANGLA. 10—2. iSaxifragec.-) 
viilga'ris, (hydrangea, w. Au. T7.) leaves oblong-ovate, obtuse at the base, 
acuminate, glabrous beneath ; cymes naked. 4 f. 
tadia'ta, leaves cordate, serrate, tomentose, and white beneath; cymes ter- 
minal, radiate ; flowers white, very ornamental. Shrub. 6 f. For the cul- 
tivated hydrangea, see HORTEJNSIS. 
HYDRASTIS. 12—13. (RanunculacecB.) [From tidor, water.] 
canaden^'sis, (yellow pucoon, w-r. Ap. %.) stem with two opposite leaves 
above ; leaves petioled, emarginate at the base, palmate, serrate, gashed ; 
peduncle terminal, solitary, 1-flowered; roots yellow. Used by the Indians 
as a die. 
HYDROCOTYLE. 5—2. iUmbelliferm.) [From wcZor, water, /coiWe, a cavity.] 
america'na, root tuberous ; stem filiform, with creeping suckers ; leaves reni- 
form, slightly 7-lobed, crenate ; umbels 4-6-flowered, axillary ; petals green- 
ish white. Wet places. 
interrup"ta, stem creeping at the joints; leaves peltate ; flowers pinnate, white, 
in small umbels, much shorter than the petioles. Marsh penny-wort. 
HYDROLEA. 5—2. {Convolvuli.) [From wrfor, water, ctoza, oil.] 
quadrivaVvis, (b. Ju. %..) spinose, pilose; leaves long-lanceolate; flowers 
nearly sessile, axillary. 
corymbo'sa^ without spines, flowers terminal. 
HYDROPELTIS. 12—13. (Ranunculacecs.) [From wtZor, water, ;je«e, a shield.] 
purpu'rea, (water-shield, p. Au. %.) leaves peltate, tinged with purple ; pe- 
duncles solitary, 1-flowered. Whole plant covered with a viscid gelatine ; 
stem long, floating. 
HYDROPHYLT-UM. 5—1. (^BoraginecB.) [From itdor, water, pJnjllum, a leaf.] 
virgini'cum, (water-leaf, w. J. %.) smoothish; leaves pinnatifid and pinnate; 
segments with deep serratures; clusters of flowers crowded; peduncles 
larger than the petioles. 18 i. 
canaden"se, somewhat hairy; leaves large, about 5-7-lobed; flowers blue 
and white, in clusters. 
IIYOSCYAMUS. 5—1. (Solanca.) [Fromsus, a swine, and ^wawios, a bean, because the plant 
is unsighlly.] 
ni'ger, (hen-bane, y-p. Ju. J*.) leaves clasping; sinuate; flowers veiny, ses- 
sile. Introduced. 
HYPERICUM. 12 — 5. (HypericcB.) [From uper, over, eikon, evil spirits, because it was 
thought to have power over such.] 
perfora^tum, (y. J. %.) erect, branching; stem 2-edged; leaves oblong, obtuse, 
transparently punctate; panicle terminal, brachiate, leafy; petals twice as 
long as the acute, lanceolate calyx. 3 styles. St. John's wort. 
virgin"ic%im, (p. Au. %.) flowers v/ith 9-12-stamens, distinctly arranged in 3 
parcels, and separated by nectaries ; 3 styles ; leaves oval, obtuse, clasping ; 
stem compressed. 1-2 f, 
ascyn/ides^ smooth ; stem square, winged at the base ; leaves sessile, acute ; 
styles free, as long as the stamens ; flowers and leaves large ; capsules 
nearly as large as nutmegs, yellow. River banks. 
puncta'lum, stem terete; leaves sub-clasping; flowers in dense corymbs; 
styles 3, longer than the stamens. Whole plant dotted with black. 
canaden^'se, erect, small, few-flowered, stem 4-sided, dichotomous above; 
leaves sessile, linear ; capsules red. 9-19 i. 
kalmiahmvi, (laurel-leaved hypericum,) shrubby, very branching corymbs ter- 
minal, 3-4 f. Cultivated as ornamental. 
prolifi'cum, leaves more narrow than the preceding ; flowers smaller, numer- 
ous. Cultivated. 
HYPOXIS. 6—1. (Narcissi.) 
erec"ta^ (star-grass, y. Ju. %..') pilose ; scape 2-3-flowered ; leaves lance-lin- 
ear ; divisions of the corolla lance-oblong. Var, graminea, has longer and 
narrower leaves ; more flowers, longer lance-linear -divisions to the corol- 
la, and altogether a more grassy appearance. 
