104 
HIERACIUM-HYACINTHUa 
HIERACIUM. 17—1. iCichoracecB.) [From fe'eraar, a hawk.] 
veno'sum, (vein-leaf hawkweed, y. Ju. %.) scape naked, corymb-panicled, 
glabrous ; leaves lance-obovate, with thin hairs above, and naked beneath, 
margin ciliate, glandular-toothed, veins coloured ; calyx glabrous. 1-2 f. 
auranti^acum, (orange hawkweed, y. '21-.). scape leafy, hispid; flowers co- 
rymbed; peduncles glomerate ; leaves oblong, acutish, pilose-hispid. Ex. 
TcaVmii, (y, Au. %-) stem erect, sub-villose ; leaves sessile, lanceolate, acumi- 
nate, sharply and divaricately toothed ; panicle sub-corymbose ; pedicels 
downy. 2 f. 
HIPPOPH^. 20—8. iJEleagni.) [From ippos, a horse, pAao, to destroy.] 
canaden"sis, (sea buckthorn, M. T2.) leaves ovate, nearly smooth above, ar- 
genteus beneath. 6-8 f 
argen'^tea, both sides of the leaves covered with silver scales, 12-18 f. 
HIPPURIS. 1 — 1. {Naides.) [From ^ppos, ahorse, owm, tail.] 
vulga'ris, (mares-tail, y-g. M. %.) leaves linear, and lance-linear, verticillate. 
HOPEA. 15—12. iMalvacem.) [Dr. John Hope.] 
tindo'ria, (sweet leaf, y. Ap. T7.) leaves lance-oblong, glaucous, pubescent be- 
neath ; flowers sessile, axillary, in clusters. 15-18 f. 
HORDEUM. 3—2. {GramincB.) 
juba'tum, (J. J^,) lateral florets abortive, awns of the calyx and corolla 6 times 
as long as the flowers. 2 f. 
vulga're, (barley, Ju. ©.) florets all perfect, awned, in two erect rows. Ex. 
HORTENSIA. 10—3. {CapHfolia.) 
specio'sa, (changeable hydrangea, r. and w. J. T^-) leaves broadly-ovate, ser- 
rate, acuminate ; flowers corymbed. From the East Indies. This is the 
common flower-pot shrub called hyderindia, and by corruption of this word 
hyderanga. 
HOTTONIA. 5—1. {Lysimachioi.) [John Hotton.] 
injia'ta, (water feather, Ju. %.) stem thick, generally submersed ; scape 
jointed ; flowers whorled, on peduncles ; leaves long, pectinate. Stagnant 
waters. 
HOUSTONIA. 4—1. (GentiancR.) [Dr. Houston.] 
cceru'lea, (innocence, Venus'-pride, b. and w. M. 11-.) stem erect, setaceous, 
dichotomous ; radical leaves spatulate; cauline ones oblanceolate, oppo- 
site ; peduncles 1-flowered, elongated. 4-6 i. 
longifo'lia, (b-w.) leaves narrow ; flow^ers terminal, nearly sessile. 
purpu'rea, purple flowers in terminal corymbs. 
HUDSONIA. 12—1. (CesH.-) 
erico'ides, (false heath, y. J. T2.) pubescent; stem suflruticose, sub-erect; 
- branches elongated; leaves filiform, subulate; peduncles lateral, elongated; 
calyx cylindrical, obtuse; capsule pubescent; 1-seeded. 4-6 i. Pine barrens. 
tomento'sa, hoary-pubescent. Sea-shore. 
HUMULUS. 20—5. (Urticco.') [From Amotms, the ground, because, without support, it trails 
on the ground.] 
lu'pulus, (hop, g-y. Au. %.) stem twining with the sun ; leaves lobed. One of 
the best of tonics. 
HYACINTHUS. 6—1. (AsphodeU.) [Said to have been named from the friend of Apollo, 
who, according to the poets, was changed into this flower.] 
orienta'lis, (garden hyacinth, r. Ap. %.) corolla funnel-form, half 6-cleft, 
ventricose at the base. Ex. 
mus^cari, (musk hyacinth, r. Ap. IJ..) corollas ovate, all equal. Ex. 
hotryo'ides, (grape hyacinth, b, Ap. %) corollas globose, uniform ; leaves cy- 
lindric, channelled, straight. Ex. 
racemo'sus, (hare-bell hyacinth,) flowers thick, ovate, those at the top sessile j 
leaves lax pendent, linear. 
como'sus, (purple grape-livacinth,) corollas angular-cylindric ; upper flowers 
long-peduncled. 
