HYD HYM 1 HYM HYP 
cotyle, a cavity ; in reference to the plants growing 
in moist situations, and the leaves being hollowed 
like cups. Linn. 5, Or. 2, Nat. Or. Umbellifercs. 
Uninteresting plants, growing in peat soil in wet 
situations; increased By divisions. Synonyme : 1. 
H. hirsuta — americand, asidtlcd, bonariensis, nepa- 
iSnsis, nOtuns, pedunculdris, plebSld, ranunculotdes, 
repandd, sibthorpioldes, trilObd, umbelldtd, villSsd, 
vulgaris. 
spicata, 1 . . . Green . . 7. S. Her. P. India . . 1810 
HYDRODicrvoN, Kunth. From hydor, water, and 
dictyon, a net ; reticulate structure of the plants. 
Linn. 24, Or. 7, Nat. Or. Alga. A curious aquatic 
production, resembling a net — utriculdtnm. 
Hydrolea, Linn. From hydor, water, and elaia, oil ; 
alluding to the situation and oily nature of the 
plant. Linn. 5, Or. 2, Nat. Or. Hydroleacea. 
Rather handsome plants when in flower, succeeding 
well in loam and peat ; and cuttings will root in 
sand, under a glass, in heat. Synonyme; 1. caro- 
liniana. 
quadrivalrls, 1 . Pa. blue . 7, S. Her. P. Carolina . 1824 
epinos^ .... Blue . . 6, S. £v. S. S. Amer. . 1791 
Hydropeltis, Michaux. From hydor, water, and 
pelte, a buckler ; the plant grows in water, and 
the leaves are like a buckler. Linn. 13, Or. 6, Nat. 
Or. Nymphaacea. This very pretty plant is seldom 
to be met with in our gardens, it being very diffi- 
cult to grow ; it requires to be kept in a cistern or 
pond of water, and may be increased by offsets. 
Synonyme: \. Brasenia peltate. 
purpurea, 1 . . Red . . 7> F- Aq. P. N. Amer. . 1798 
Hv'nROPHYLLUM, Linn. From hydor, water, and 
phyllon, a leaf. Linn. 5, Or. 1, Nat. Or. Hydro- 
phyllacece. Dwarf, neat-foliaged plants, inhabiting 
the marshes of North America; any rich soil suits 
them in a moist situation; and they may be in- 
creased by suckers. 
canadensS . . . White . 5, H. Her. P. Canada • . 1759 
virglnlcum . . . Blue . . 6, H. Her. P. N. Amer. . 1739 
Hydrot.®n1a, Lindley. The petals have a triangular 
glandular bar at their base, which points upwards 
and secretes honey; whence the name. Linn. , 
Or. , Nat. Or. Iridacea. A curious genus, found in 
mountain pastures, near the Real del Monte mines 
in Mexico. The plant looks like a Tigridia, and 
bears flowers resembling Fritillaria pyrenaica, only 
smaller. For culture, &c., see Tigridia. 
Melefigris . . . Yellow . 7, H. Bl. P. Mexico . .1837 
Hygr6cr6cTs, Agardh. From hygros, moist, and 
krokis, a little tuft. Linn. 24, Or. 7, Nat. Or. 
Algae. These plants are only found in chemical 
solutions of vegetable matter, such as ink, rose 
water, &c. — atramSntl, barytied, pallida, Rdsd, 
sanguined, typhlodermd, vini. 
Hygrometricai., indicating the approach of water. 
Hyorophila, R. Brorvn. From hygros, moist, and 
phileo, to love, alluding to the habitat of the plant. 
Linn. 14, Or. 2, Nat. Or. Acanthaceae. A pretty 
plant, growing freely in a rich light soil; and 
young cuttings root freely in the same kind of soil, 
under a glass, in heat. Synonyme: 1. Ruellia 
ringens. 
rlngens .... S. Ev. Tr. E. Ind. . . 1 820 
Hymenjea, Linn. From Hymen, god of marriage ; in 
reference to the two leaflets. Linn. 10, Or. 1, Nat. 
Or. Leguminosae. The species of Locust-tree are 
highly ornamental ; they delight to grow in loam 
and peat, and cuttings will root in sand, under a 
glass, in heat. Synonyme : 1. Trachylobium Mar- 
tianum. 
Candolliana . . White . . S. Ev. T. Acapulco . 1824 
Courbaril . . . Yel. pur. . S. Ev. T. W. Ind. . 1688 
verrucosa, 1 . . S. Ev. T. Madagas. . 1808 
Hymenanthera, R. Brorvn. From hymen, a mem- 
brane, and anthera, an anther , the termination of 
the anthers. Linn, b. Or. 1, Nat. Or. Polygalacece. 
An ornamental shrub, about six feet high ; it grows 
freely in peat and loam, and cuttings root in sand, 
under a glass, in heat. 
dentata .... Yellow . 5, G. Ev. S. N. HolL . 1824 
Hymenelia, Fries. From hymen, a membrane; the 
plants are scal^. Linn. 24, Or. 9, Nat. Or. Fungi. 
Small productions, found on nettle stems — vulgaris. 
HymenocarpDs, Savi. From hymen, a membrane, 
and karpos, a fruit ; alluding to the membranous 
legumes. Linn. 17, Or. 4, Nat. Or. Leguminosae. 
Little inconspicuous plants, of the simplest culture. 
Synonymes: 1. Medicago circinata. 2. M. nummu- 
laria. 3. M. radiate. 
circinattts, 1 . . YeUow . 7, H. Tr. A. Italy . . 1640 
nummularius, 2 . Yellow . 8, H. Tr. A. S. France . 1640 
radiatus, 3 . . . Yellow . 6, H. A. Italy . . 1629 
HYMKNODicTifdN, WalUch. From hymen, a membrane, 
and diktyon, a net ; the seeds are girded by a reti- 
culated membrane. Linn. 5, Or. 1, Nat. Or. Cin- 
chonaceae. Ornamental trees, from twenty to thirty 
feet high ; for culture and propagation, see Cin- . 
chona. Synonymes: \. Cinchona excelsa. 2 C.thyr- 
sijlora. 
excelsum, 1 . . Gm. yel. . 7, S. Ev. T. E. Ind. . . 1820 
thyrsiflorum, 2 . Gm.yel. . 6, S. Ev. T. E. Ind. . . 1819 
Hymen6gyne, Harvorth. From hymen, a membrane, 
and gyne, a woman. Linn. 12, Or. 2, Nat. Or. 
Ficoideae A plant of no great beauty, and requir- 
ing the same treatment as other tender annuals. 
Synonyme : 1. Mesembryanthemum glabrum. 
glabra, 1 ... Pa. yel. . 8, G. A. C. G. H. . 1787 
HymenopappC's, L’ Heritier. From hymen, a mem- 
brane, and pappos, a pappus.; in reference to the 
membranous crown of the seeds. Linn. 19, Or. 1, 
Nat. Or. Compositae. Half-hardy annuals, of little 
beauty, and easy culture. Synonyme: 1. Stevia 
pedata. 
pedatiis, 1 . . . \Vhite. . 8, H. A. S Amer. . 1803 
scabiosxQs . . . White . . 8, H. A. Carolina . 1816 
tenuifOlifis. 
Hymenoph7li.um, Smith. From hymen, a membrane, 
and pAy//on, a leaf; alluding to the leaves. Linn. 
24, Or. 1, Nat. Or. Gleicheniaceae. The species of 
this genus rank among the most elegant of the 
Ferns, and do best when grown in small pots, in a 
mixture of loam and peat, and increase freely by 
seed, or dividing the roots, 
tunbridgensd . . Brown . 6, H. Her. P. Britain . . 
Wilsdni . . . Brown . 6, H. Her. P. Britain . . 
Hyosc^amCs, see Physochlaind. 
HyoscyamCs, Linn. From hyos, a hog, and kyamos, 
a bean ; the fruit is eaten by the swine . Linn. 5, 
Or. 1, Nat. Or. Solanaceae. The species of Henbane 
are all of the easiest culture. The shrubby and 
herbaceous kinds are well adapted for planting on 
rock-work during summer, but in winter they 
require the protection of glass ; and are increased 
by cuttings or seeds. The annual and biennial 
kinds merely require sowing in the open ground. 
Henbane has been long used as a medicine. Synu- 
nyme : 1. H. niger annuus. 
auriculatus • . Yellow . 6, H. A. Naples. . 1823 
canariecsls . . Yellow . 12, G. Ev. S. Canaries . 1816 
Datura .... Yellow . 5, F. Ev. S. Egypt , . 1829 
niger .... Yel. pur. 6, H. B. Britain 
agrestis l,dlbils,anreiis,micrdnthis,miticiis, pdllldds, 
puslllfis, SeneciOnis. 
Hyoseris, Linn. From hyos, a hog, and seris, suc- 
cory; swine 's-succory. Linn. 19, Or. 1, Nat. Or. 
Compositae. Uninteresting herbaceous plants, of 
the simplest culture — arendrld, Inddd, radidtd, 
sedbrd. 
Hypec6uh, Linn. From hypecheo, to rattle ; in refer- 
ence to the noise made by the seeds in the pods. 
Linn. 4, Or. 2, Nat. Or. Papaveraceae. These are 
very pretty plants ; the seed has only to be sown in 
the open ground. 
erectum . . . Yellow . 5, H. A. Siberia . 1759 
pendulum . . Yellow . 6, H. Tr. A. S. France . 1640 
procumbens . . Yellow . 7, H. Tr. A. S. Eur. . . 1596 
Hyperboreos, northern. 
Hypercatharsis, a medicine that produces too power- 
ful effects as a purgative. 
Hypeiuc^j, Linn. The name is said to be derived 
froiifllTper and eicon, an image ; the superior part of 
the flower represents a fi^re. Linn. 18, Or. 2, 
Nat. Or. Hypericaceae. The most part of the spe- 
cies of this extensive genus are showy plants. The 
greenhouse and frame shrubby kinds do well in 
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