112 
HIPPOPH^—HYD RANGE A. 
pharply and divaricately toothed ; panicle 
sub-corymbose ; pedicels downy. 2 f. 
HIPPO'PH^. 20-8. (jEleagni.) iFromippos, 
a horse, phao, to destroy.] 
canaden"sis, (sea buckthorn, M. Ip .) leaves 
ovate, nearly smooth above, argenteus be- 
neath. 6-8 f. 
argen"tea, both sides of the leaves cov- 
ered with silver scales. 12-18 f. 
HIPPU'RIS. 1—1. {Naides.) [Txomippos,^ 
horse, oura. tail.] 
vulga'ris, (mare's-tail, y-g. M. 11.) leaves 
linear, and lance-linear, verticillate. 
monta'nn, leaves in sixes, linear, acute. 
mariti'ma, leaves in fours or sixes, lance- 
olate, obtuse, scarcely gangrenous. 9-18 i. 
HOL"CUS. .3—2. (Griiviinea:.) [From olkos, 
the Greek name of a plant with awns like 
barley.] 
lana'tns, (soft-grass, w. Ju. 11) 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. {Malvacem.) [Dr. John 
Hope.] 
tinclo'ria, (sweet leaf, y. Ap. Ip.) leaves 
lance-oblong, glaucous, pubescent beneath ; 
flowers sessile, axillary, in clusters. 15-18 f 
HOR"DEUiVt. 3—2. {Graminm.) 
juba'tnm, (J. $ .) lateral florets abortive; 
awns of the calyx 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, imbricate. 
Ex. 
pusil"lf(m,\aXera.l florets staminate or neu- 
ter, awnless, acute ; four inner glumes cori- 
aceous, dilated, all short-awned ; awns sca- 
brous, decumbent. 4-6 i. 
H0RTEN"SIA 10—3. (CaprifoUa.) 
specio'sa, (changeable hydrangea, r. and 
w. J. Ip.) leaves broadly ovate, serrate, 
acuminate; flowers corymbed. From the 
East Indies. This is the common flower- 
pot shrub called hyderindia, and by corrup- I 
tion of this word hydrangea. 
HOTTO'NIA. 5—1. (Li/simachice.) [John 
Hotton.] 
injla'ta, (water-feather, Ju. 11.) stem 
thick, generally submersed ; scape jointed ; ' 
flowers whorled, on peduncles ; leaves long, j 
pectinate. Stagnant waters. ! 
HOUSTO'NIA. 4—1. (GentiancE.) [Dr. Hous- | 
ton.] I 
serpyl'lifoUa, (b. M. 11.) procumbent, 
cespitose ; leaves apatulate, obtuse ; ped- 
uncles terminal, 1-flowered, very long. 
teneV'la, (b. J. 11) stem creeping, filiform ; 
leaves round, acute, nerved; peduncles ter- 
niinal, 1-flowered, very long, smaller than 
the last. 
roLititdifo'lia, (w. Ap. 2^.) creeping; 
leaves ovate, roundish, abruptly narrowed 
at the base : peduncles axillary, solitary, 
1-flowered ; leaves evergreen. 
ciliola'ta, (p.) radical leaves ovate, obtu.se, 
narrow at the base, ciliate at the margin, 
jauliue ones ovate-spatulate, sessile ; co- 
rymbs terminal, pedicelled ; peduncles tri 
chotomous; divisions of the calyx lance- 
linear, stem smooth, branched above. 
p'ubeH"cens, leaves wedge-form, acute, 
pubescent, lower ones sub-petioled, lance- 
olate, upper ones sub-oval, sessile ; panicle 
tiichotomous, terminal. 
pa'tenx, (p. Mar. ©.) small ; stem branch- 
ing, dichotomous, with scabrous angles ; 
flowers solitary, terminal, and axillary. 
1-2 i. 
copru'lea, (innocence, Venus' -pride, b. and 
w. M. 11) stem erect, setaceous, dichoto- 
mous ; radical leaves spatulate, cauline 
ones oblanceolate, opposite ; peduncles 
1-Howered, elongated. 4-6 i. 
longifo'Iia, (b-w.) leaves narrow ; flowers 
terminal, nearly sessile. 
■piirpu'rea, purple flowers in terminal cor 
ymbs. 
HOY'A. 18—5. {ApocynecE.) 
carno'sa, (w-r.) leaves ovate ; flowers 
bearded, wax-like, distilling a honey-like 
fluid. A vine. 
HUDSO'NIA. 12—1. {Cesti.) 
ericoi'tles, (false heath, y. J. ^) pubes- 
cent ; stem suffruticose, sub-erect ; branches 
elongated ; leaves filiform, subulate ; ped- 
uncles lateral, elongated ; calyx cylindri- 
cal, obtuse ; capsule pubescent ; 1-seeded. 
4-6 i. Pine barrens. 
tomento'sa, hoaiy pubescent. Sea-shore. 
monta'na, decumbent, smoothish, cespi- 
tose ; leaves long, filiform-subulate, sub im- 
bricate ; peduncles terminal, solitary ; calyx 
bell-form, woolly ; capsule villose. 3-5 i. S. 
HU'MULUS. 20—5. (Urticai.) iFxom humus, 
the ground, because, without support, it 
trails on the ground.] 
In'pulus, (hop, g-y. Au. Z^.) stem twining 
with the sun ; leaves lobed. One of the 
best of tonics. 
HYAC1N"THUS. 6—1. (Asphodeli.) [Said 
to have been named from the friend ol 
Apollo, who, according to the poets, was 
changed into this flower.] 
one/da'lis, (garden hyacinth, r. Ap. 7..^.) 
corolla funnel -form, half 6 cleft, ventricose 
at the base. Ex. 
mus"cari, (musk hyacinth, r. Ap. 11) 
corollas ovate, all equal. Ex. 
botryoi'des, (grape hyacinth, b. Ap. 11) 
corollas globose, uniform ; leaves cylindri 
channelled, straight. Ex. 
racemo'sus, (hare-bell hyacinth,) flowers 
thick, ovate, those at the top sessile ; leaves 
lax-pendent, lixiear. 
como'sus, (purple grape-hyacinth,) corol 
las angular-cyliudric ; upper flowers long- 
peduncled. 
HYDRAN"GEA. 10—2. (Saxifraga:) [From 
udor, water, and aggeion. a vessel, in allu- 
sion to the shape of the seed-vessel.] 
vulga'ris, (hydrangea, w. Au. .) leaves 
oblong-ovate, obtuse at the ba.se, acumin- 
ate, glabrous beneath ; cymes naked. 4 f. 
rndia'ta, leaves cordate, serrate, tomen- 
tose, and white beneath ; cymes terminal, 
radiate ; flowers white, very ornamental. 
Shrub. 6 f For the cultivated liydrangea, 
see Horten'sia. 
corda'ta, (M. J. H) leaves broad ovate, 
