112 



HIPPOPH^— HYDRANGEA. 



Bharply and divaricately toothed ; panicle 

 sub-corymbose ; pedicels downy. 2 f. 



HIPPO'PH.^. 20—8. (JEhagni.) [From ippos, 



a horse, phao, to de.slroy.] 



canaLlen"$is, (sea buckthorn, M. ^ .) leaves 

 ovate, nearly smooth above, argenleus be- 

 neath. 6-8 f. 



argen"lea, both sides of the leaves cov- 

 ered v^'ith silver scales. 12-18 f. 

 HIPPU'RIS. 1—1. {Naides.) [From zjjjjos, a 



horse, oura. tail.] 



vrilga'ria, (mare's-tail, y-g. M. li) 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. (Graminea:.) [From olkos, 



the Greek name of a plant with awns like 



barley.] 



lana'tus, (softgi'as.s, w. Ju. 21) 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, whiti.sh. 



HO'PEA. 15—12. {Malvacea.) [Dr. John 



Hope.] 



tincto'ria, (sweet leaf, y. Ap. '^ .) leaves 

 lance-oblong, glaucous, pubescent beneath ; 

 flowers sessile, axillary, in clusters. 15-18 f. 



HOR"DEUM. 3—2. (GramincE.) 



juba'tum, (J. (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"ticho7i, (J. @.) lateral florets imper- 

 fect, awnless; seeds angular, imbricate. 

 Ex. 



pusiVlumiiaXevdl 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. {Caprifotia.) 



specio'sa, (changeable hj-drangea, r. and 

 w. J. ^.) leaves broadly ovate, serrate, 

 acuminate ; flowers corymbed. Fi'om the 

 East Indies. This is the common flower- 

 pot shrub called hyderindia, and by corrup- 

 tion of this word hydrangea. 

 HOTTO'NIA. 5—1. {LysimacUa.) [John 



Hotton.] 



xnjia'ta, (water-feather, Ju. 2^.) stem 

 thick, generally submersed ; scape jointed ; 

 flowers whorled, on peduncles ; leaves long, 

 pectinate. Stagnant waters. 

 UOUSTO'NIA. 4—1. {Gtntianiz.) [Dr. Hous- 

 ton.] 



serpyU'lifoUa, (b. M. Zf.) procumbent, 

 cespitose ; leaves spatulate, obtuse ; ped- 

 uncles terminal, l-flo\vored, veiy long. 



tend" la, (b. J. 2_f .) stem creeping, filiform ; 

 leaves round, acute, nerved; peduncles ter- 

 minal, 1-flowered, very'long, smaller than 

 the last. 



roLundifo'lia, (w. Ap. ll) creeping; 

 leaves ovate, roundish, abruptly naiTowed 

 at the base ; peduncles axillary, solitary, 

 1-flowered ; leaves evergreen. 



ciliola'ta, (p.) radical leaves ovate, obtuse, 

 narrow at the base, ciliate at the margin, 

 jauline ones ovate-spatulate, sessile ; co- 



rj-mbs terminal, pedicelled ; peduncles trt 

 chotomous; divij-ions of the calyx lance 

 linear, stem .';mooth, branched above. 



puhe'i"ceii!^, leaves wedge-form, acute, 

 pubescent, lower ones sub-petioled, lance- 

 olate, upper ones sub-oval, sessile ; panicle 

 trichotomous, terminal. 



pa'tenx, (p. Mar. @.) small ; stem branch- 

 ing, dichotomous, with scabrous angles ; 

 flowers Bolitary, terminal, and axillary. 

 12i. 



coeru'lea, (innocence. Venus'-pride, b. and 

 w^. M. 14-.) stem erect, setaceous, dichoto- 

 mous ; radical leaves spatulate, cauline 

 ones oblanceolate, opposite ; peduncles 

 1-flowered, elongated. 4-6 i. 



longifo'lia, (b-w.) leaves narrow ; flowers 

 terminal, nearly sessile. 



fnirpn'rea, purple flowers in terminal cor 

 ymbs. 

 HOY'A. 18—5. {Aj)Ocyne(B.) 



carno'sa, (w-r.) leaves ovate ; floNvers 

 bearded, wax-like, distilling a honey-hke 

 fluid. A vine. 

 HUDSO'NIA. 12—1. {Cesti.) 



ericoi'des, (false heath, y. J. ^.) pubes- 

 cent ; stem suff"ruticose, sub-erect ; branchea 

 elongated ; leaves filifonn, subulate ; ped- 

 uncles lateral, elongated ; calyx cylindri- 

 cal, obtuse ; capsule pubescent ; 1-seeded. 

 4-6 i. Pine barrens. 



iomento'sa, hoary-pubescent. Sea-shore. 



moiita'na, decumbent, smoothish, cespi- 

 tose; leaves long, filiform-subulate, sub-im- 

 bricate ; peduncles terminal, soHtaiy ; calyx 

 bell-form, woolly ; capsule villo.se. ."3-5 i. S. 

 HU'MULUS. 20—5. (UrticcB.) {From humus, 



the ground, because, without support, it 



trails on the ground.] 



hi'pnlus, (hop, g-y. Au. 2X-) stem twining 

 with the sun ; leaves lobed. One of the 

 best of tonics. 

 HYACIN"T»US. 6—1. (Asphodeli.) fSaid 



to have been named from the friend ol 



Apollo, who, according to the poets, was 



changed into this flower.] 



orieuta'lis, (garden hyacinth, r. Ap. 7.^.) 

 corolla funnel-form, half 6-cleft, ventricose 

 at the base. Ex. 



mus"cari, (musk hyacinth, r. Ap. 2^.) 

 corollas ovate, all equal. Ex. 



botryoi'dcs, (grape hyacinth, b. Ap. 2|.) 

 corollas globose, uniform ; leaves cylindri.;, 

 channelled, straight. Ex. 



racemo'sns, (hare-bell hyacinth,) flower.' 

 thick, ovate, those at the top sessile ; leaves 

 lax-pendent, linear. 



como'sns, (purple grape-hyacinth,) corol 

 las angular-cylindric ; upper flow^ers long 

 peduncled. 

 HYDRAN"GEA. 10—2. {Saxifragcp.) [From 



udor, w'ater, and aggeion, a vessel, in allu 



sion to tlie shape of the seed-vessel.] 



vulga'ris, (hydrangea, w. Au. ^ .] leaves 

 oblong-ovate, obtuse at the base, acumin- 

 ate, glabrous beneath ; cymes naked. 4 f 



radia'ta, leaves cordate, serrate, tomen- 

 tose,' and white beneath ; cymes terminal, 

 radiate ; flowers white, veiy ornamental. 

 Shrub. 6 f For the cultivated hydrangea, 

 see Horten'sia. 



corda'ta, (M. J. 2^.) leaves broad ovate, 



