118 
HIPPOPH^— HYDKaNGEA 
sharply find divaricately toothed ; panicle 
eub-corymbose ; pedicels downy. 2 f. 
RIPPO'PH^. 20—8. {jEleagni.) [From ippos, 
a horse, phao, to destroy.] 
canaden"sis, (.sea buckthorn, M. Ip .) leaves 
ovate, nearly smooth above, arg-enteus be- 
neath. 6-8 f. 
argcn"tea, both sides of the leaves cov- 
ered with silver scales. 12-18 f. 
HIPPU'RIS. 1—1. (Naides.) VPromippos,^ 
horse, oura. tail.] 
vulga'ris, (mare's-tail, y-g. M. 2/.) leaves 
linear, and lance-linear, verticillate. 
monta'na, leaves in sixes, linear, acute. 
mariti'ma, leaves in fours or sixes, lance- 
olate, obta.se, scarcely gangrenou.s. 9-18 i. 
fIOL"CUS. 3—2. (Grnminea.) [From olkos, 
the Greek name of a plant with awns like 
barley.] 
lana'tm, (soft-grass, w. Ju. 2i.) perfect 
floret inferior and awnless, sterile one with 
a curved awn included in the glume; root 
fibrous; culm 18 inches high; panicle ob- 
long, contracted, whitish. 
HO'PEA. 15—12. (Malvacece.) [Dr. John 
Hope.] 
lance-oblong, glaucous, pubescent beneath ; 
Bowers sessile, axillary, in clusters. 15-18 f 
HOR"DEUM. 3—2. (GramincB.) 
juba'tnm, (J. $ .) lateral florets abortive; 
awns of the calj'x and corolla 6 times as 
long as the flowers. 2 f 
vnlga're, (barley, Ju. ^.) florets all per- 
fect, awned, in two erect rows. Ex. 
dis"tichon, (J. @.) lateral florets imper- 
fect, awnless; seeds angular, imbi'icate. 
Ex. 
pusil"lum,\a,tera.\ florets staminate or neu- 
ter, awnless, acute ; four inner glumes cori- 
aceous, dilated, all short-awned ; awns sca- 
brous, decumbent. 4-6 i. 
HORTEN"SlA. 10—3. {Caprifolia.) 
specio'sd, (changeable hydrangea, r. and 
w. J. ^.) leaves broadly ovate, serrate, 
acuminate ; flowers corymbed. From the 
East Indies. This is the common flower- 
pot shrub called hyderindia, and by corrup- 
tion of this word hydrangea. 
HOTTO'NIA. 5—1. (Lysimachios.) [John 
Hotton.] 
xnjla'ta, (water-feather, Ju. 2^.) stem 
thick, generally submersed ; scape jointed ; 
flowers whorled, on peduncles ; leaves long, 
pectinate. Stagnant waters. 
HOUSTO'NIA. 4—1. (GenliaruB.) [Dr. Hous- 
ton.] 
aerpyU'lifolia, (b. M. 2/.) procumbent, 
cespitose ; leaves spatulate, obtuse ; ped- 
uncles terminal, 1-flow^red, very long. 
teneV'la, (b. J. IX) stem creeping, filiform ; 
leaves round, acute, nerved; peduncles ter- 
minal, 1 -flowered, very long, smaller than 
the last. 
rotundifo'lia, (w. Ap. 2^.) creeping; 
leaves ovate, roundish, abruptly narrowed 
at the base ; peduncles axillary, solitary, 
1-flowered ; leaves evergreen. 
ciliola'ta, (p.) radical leavesovate, obtu.se, 
narrow at the base, ciliate at the margin, 
jauline ones ovate-spatulate, sessile ; co- I 
rymbs terminal, pedicelled ; peduncles trt 
chotomous ; divisions of the calyx lance- 
linear, stem smooth, branched above. 
pubes''cens, leaves wedge-form, acute, 
pubescent, lower ones sub-petioled, lance- 
olate, upper ones sub-oval, sessile ; panicle 
trichotomous, terminal. 
pa'tentt, (p. Mar. @.) small ; stem branch- 
ing, dichotomous, with scabrous angles; 
flowers solitai-y, terminal, and axillary. 
1 2 i. 
cceru'Iea, (innocence, Venus'-pride, b. and 
w. M. 2X-) stem erect, setaceous, dichoto- 
mous; radical leaves spatulate, cauline 
ones obianceolate, opposite ; peduncles 
1-flowered, elongated. 4-6 i. 
loiigifo'Ua, (b-w.) leaves narrow ; ttowera 
terminal, nearly sessile. 
pnrpu'i-ea, purple flowers in terminal cot 
ymbs. 
HOY' A. 18—5. {Apocynem.) 
cnrno'sa, (w-r.) leaves ovate ; flowers 
bearded, wax-like, distilling a honey-hke 
fluid. A vine. 
HUDSO'NIA. 12—1. {Cesti.) 
ericoi'des, (false heaih, y. J. pubes- 
cent ; stem sufFruticosc, sub-erect ; branches 
elongated ; leaves filiform, subulate ; ped- 
uncles lateral, elongated ; calyx cyHndri- 
cal, obtuse ; capsule pubescent ; 1-seeded. 
4-6 i. Pine barrens. 
tometUo'sa, hoary-pubescent. Sea-shore. 
monta'na, decumbent, smoothish, cespi- 
tose; leaves long, filiform-subulate, sub-im- 
bricate ; peduncles terminal, solitary ; calyx 
bell-fonn, woolly ; capsule villose. 3-5 i. S. 
HU'MULUS. 20—5. (Urtica:.) [From AM»m«, 
the ground, because, without support, it 
trails on the ground.] 
lu'pulus, (hop, g y. Au. 11.) stem twining 
with the sun; leaves lobed. One of the 
best of tonics. 
HYACW'THUS. 6—1. (Asphodeli.) [Said 
to have been named from the friend ol 
Apolio, wiio, according to the poets, was 
changed into this flower.] 
orientaflis, (garden hyacinth, r. Ap. 11.) 
corolla funnel-form, half 6 cleft, ventricose 
at the base. Ex. 
mu!i"cari, (musk hyacinth, r. Ap. 11) 
corollas ovate, all equal. Ex. 
botryoi'des, (grape hyacinth, b. Ap. 24-) 
corollas globose, unifonn ; leaves cylindrij, 
channelled, straight. Ex. 
raceino'aus, (hare-bell hyacinth,) flower? 
thick, ovate, those at the top sessile ; leaves 
lax-pendent, linear. 
como's7is, (purple gi*ape-hyacinth,) corol 
las angular-cylindric ; upper flowers long 
peduncled. 
HYDRAN"GEA. 10—2. (Saxifragcp.) [From 
udor, water, and aggeion, a vessel, in allu 
sion to the .shape of the seed-vessel.] 
vulga'ris, (hydrangea, w. Au. T?.) leaves 
oblong-ovate, obtuse at the base, acumin- 
ate, glabious beneath ; cymes naked. 4 f 
radia'ta, leaves cordate, serrate, tomen- 
to.se, and white beneath ; cymes terminal, 
radiate; flowers white, very ornamental, 
Shrub. 6 f For the cultivated hydrangea, 
see Hurt en's I A. 
corda'ta, (M. J. 2.^.) leaves broad ovale 
