HYDRANGEA—HYPOXIS. 
105 
HYDRANGEA. 10-2. ( Saxifragcn.) 
vulga'ris , (hydrangea, w. An. Tq.) leaves oblong-ovate, obtuse at the base, 
acuminate, glabrous beneath ; cymes naked. 4 f. 
radio,'ta , leaves cordate, serrate, tomentose, and white beneath; cymes ter¬ 
minal, radiate ; flowers white, very ornamental. Shrub. G f. For the cul¬ 
tivated hydrangea, see HORTENSIS. 
HYDRASTIS. 12—13. ( Ranunculacem .) [From wcZor, water.] 
canadensis , (yellow pncoon, w-r. Ap. 7j-.) st|m 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. ( UmbellifercB .) [From udor, water, kotule, 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 11 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 w&r, water, elaia, oil.] 
quad rival'vis, (b. Ju. Tf.) spinose, piloseleaves long-lanceolate; flowers 
nearly sessile, axillary. 
corymbo'sa , without spines, flowers terminal. 
HYDROPELTIS. 12—13. ( Ranunculacecu.) [From udor, water, pelte, a shield.] 
purpu'rea , (water-shield, p. Au. fij..) leaves peltate, tinged with purple; pe¬ 
duncles solitary, I-flowered. Whole plant covered with a viscid gelatine ; 
stem long, floating. 
HYDROPHYLLXJM. 5—1. ( Boraginecd .) [From udor , water, phyllum , a leaf.] 
virgini'cum , (water-leaf, w. J. 7{.) 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. 
V 
HYGSCYAMUS. 5—f. (Solanos.) [Fromsws, a swine, and kuamos, abejan, because the plant 
is unsightly.] , 
ni'ger , (hen-bane, y~p. Ju. Jb) leaves clasping; sinuate; flowers veiny, ses¬ 
sile. Introduced. 
HYPERICUM. 12—5. (Ilyperict b.) [From uper , over, eikon , evil spirits, because it was 
thought to have power over such.] 
'perfora'turn. (y. J. fij..) 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"icum , (p. An. QJ.) flowers with 9-12--stamens, distinctly arranged in 3 
parcels, and separated by nectaries ; 3 styles ; leaves oval, obtuse, clasping ; 
stem compressed. 1-2 f. 
ascyro'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. 
punda'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. 
kalmia'num , (laurel-leaved hyperic'um,) 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. G—1. (Narcissi.) 
erec"ta ) (star-grass, y. Ju. 7j..) pilose; scape 2-3-flowered; leaves lance-lin¬ 
ear ; divisions of the corolla lance-oblong. Var. gr amine a , has longer and 
narrower leaves ; more flowers, longer lance-linear divisions to the corol¬ 
la, and altogether a more grassy appearance. 
