ORB ORM 
ORN ORN 
rnriegata . . . YeL str. . 8, S. Kv. S. C. G. H. . 1727 
WendlandianS, 5 Yel. sir. . 8, S. Ev. S. C. G. H. . 1J818 
Woodfordiana . S. Ea S. C. G. H. • 1810 
Orbiculate, circular, or spherical. 
Orbiculatelv-depressed, spherical, but depressed on 
the top. 
Orchall, see Roccella. 
Orchis, Linn. Orchis, testis ; frequent shape in the 
roots. Linn. 20, Or l,Nat. Or. Orchidacecs. Some 
of the species of this genus are well known, and 
require the same treatment as the genus Ophrys. 
O. maculata, and several others, grow best in peat 
soil. Synonymes : 1. Orchis parvijiora. 2. Gymna- 
denia angiistifolia. 3. 0. palustris. 4. 0. tephro- 
sanlhos. 5. 0. Rivini. 6. 0. sulphurea. 7* O. Cy- 
rilli. 8. 0. Schleicheri. 9. Habenaria spectabilis. 
10. 0. similia. 11. O.tephrosantkos. 
acuminata, 1 . . Purple . 5, F. Ter. Barbary . .1815 
coriophdr^ . . . Brown . 6, H. Ter. SwitzerL . . 1825 
folio.'i .... Purple . 5, F. Ter. Madeira . . 
fusc£ Brown . 6, H. Ter. England . . 
fuscescens . . . Green . . 6, H. Ter. N. Amer. . 1831 
gloho>a .... Purple . 6, H. Ter. Austria . . 1792 
nircind .... Brown . 6, H. Ter. England . . 
iberica, 2 ... White . . 6, H. Ter. Caucasus . . 1819 
latifOlra .... Pink . . 6, H. Ter. Britain . . 
laxiflora, 3 . . . Purple . 6, H. Ter. Europe . . 1820 
longibracteata . . Purple . 6, F. Ter. Sicily . . . 1818 
longicornis . . . Purple . 5, F. Ter. Barbary . . 1815 
jnSerS, 4 . . . . Fa. pur. . 5, H. Ter. Britain . . 
maculatd .... Flesh . . 6, H. Ter. Britain . . 
m&sculS .... Purple . 5, H. Ter. Britain . 
militarls .... Purple . 5, H. Ter. SwitzerL . . 1825 
vera, 5 ... Purple . 5, H. Ter. SwitzerL . . 1825 
morlo Purple . 5, H. Ter. Britain . . 
pallens, 6 . . . Pa. yel. . 5, H. Ter. SwitzerL . . 1825 
papilionacg^ . . . Purple . 4, H. Ter. Rome . . . 1788 
provincialls, 7 • • Pur- yel- • 6, H. Ter. SwitzerL . . 1825 
pauciflora . . . Purple . 7, H. Ter. Italy . . . 1825 
pseudo-sambucinS . Purple . 4, H. Ter. Italy . . . 1828 
quadripunctata . . Purple . 4, H. Ter. Italy . . . 1828 
saccata .... Purple . 4, H. Ter. Sicily . . . 1828 
sambucina, 8 . . Yellow . 4, H. Ter. SwitzerL . . 1825 
spectabilis, 9 . . Pink . . 6, H. Ter. N. Amer. . 1801 
tephro.santhds, 10 . Purple . 4, H. Ter. England . . 
undulate .... Pa. pur. . 12, F. Ter. Sicily. . . 1818 
undulatifulia, 11 . Pa. pur. . 5, H. Ter. Britain . 
mstulata .... Purple . 5, H. Ter. England . . 
variegaU . . . . Pa. pur. . 5, H. Ter. S. Eur. . . 1818 
Orifice, an opening. 
Origanum, Linn. From cros, a mountain, and ganos, 
joy ; in allusion to the habitation of the plants. 
Linn. 14, Or. 1, Nat. Or. Labiates. Marjoram is a 
genus of well-known and easily cultivated plants; 
they grow in any light dry soil. The shrubby 
kinds are increased by cuttings or slips ; the her- 
baceous species by dividing at the roots. O. Dic- 
iamnus is said to be tonic and stimulant. Syno- 
nymes : 1. 0. stoloniferiim, 2. O. humile- 3. O. cre- 
ticum, 0. megastachyum. 4. 0. oblongatum, 0. virens. 
tegyptWcum . . Pink . . 7. F. Ev. S. Egypt . . 1731 
Dictamnus . . . Pink . . 7, F. Ev. S. Candia . . 1551 
heracleoticum . . White . . 8, H. Her. P. S. Eur. . . 1640 
Maru .... Pink . . 6, F. Ev. S. 
normale . . . Blue . . 6, H. Her. P. Nepal . .1819 
sipyleum . . . Pink . . 8, F. Ev. S. Levant . . 1699 
TournefortI . . Pink . . 8, F. Ev. S. Arnorgos . 1788 
Yulgare, 1 . . . Pink . . 8, H. Her. P. Britain . . 
n6r6-alb6 . . White . . 6. H. Her. P. Britain . . 
humile, 2 . . Purple . 6, H. Her. P. Asia . ,1818 
prismaticum, 3 White . . 7, H. Her. P. Mediter. 
Virens, 4 . . . Purple . 6, H. Her. P. Portugal . 
Orlava, Hojfftnann. In honour of John Orlay, M.D., 
secretary to the Medico-Chirurgical Society of 
Moscow. Linn. 5, Or. 2, Nat. Or. Unibellifercs. 
Worthless plants. The seed should be sown in the 
open ground in spring. Syiionymes ; 1. Caucalis 
grandiflora. 2. C. maritima. 3. platycarpos — gran- 
diflCrd 1, maritima 2, platycdrpOs. 
Ormocarpum, P. Browne. From ormos, a necklace, 
and karpos, a fruit ; the pods are jointed, and appear 
like a necklace. Linn. 17, Or. 4, Nat. Or. Legu- 
minosae. For the culture and propagation of this 
plant, see Pectitia. Synonyme: 1. Hedysarum sen- 
noides — sennoldes. 
Ormosia, Jackson. From ormos, a necklace; the 
seeds of O. eoccinea are strung for necklaces; they 
are red, and have a black spot at one end. Linn. 
10, Or. l,Nat. Or. Leguminosas. Ornamental trees, 
requiring to be treated the same as the stove species 
of Edwardsia. Synonyme : 1. Robinia coccinea, 
t 225 ] 
coccinea, 1 . . . Blue . . 7, S. Ev. T. Guiana . . 1823 
dasycarpa . . . Blue . . 6. S. Ev. T. W. lad. .1793 
Ornithidium, Salisbury. From ornis, a bird, and 
eidos, like ; the upper lip of the stigma is beak -like. 
Linn. '20, Or. 1, Nat. Or. Orchidacecs. This is a 
genus of rather interesting plants ; for culture and 
propagation, see Burlingtonia. 
album .... White. . 9, S. Epi. Trinidad . 1833 
coccineum . . . Scarlet . 6, S. Epi. Martinique 1790 
Ornithocephalus, Hooker. From ornis, a bird, and 
ktphale, a head; the column resembles a bird's- 
head. Linn. 20, Or. 1, Nat. Or. Orchidacecs. A 
curious little epiphyte, requiring precisely the 
same treatment as the genus Burlingtonia. 
gladiatus . . . . Green . . S. Epi. Trinidad. . 1823 
trichorhlzus . . . Straw . . 4, S. EpL Trinidad. . 1835 
Ornithogalum. From ornis, a bird, and gala, milk. 
Linn. 6, Or. 1, Nat. Or. Liliacecs. An ornamental 
genus of plants, thriving well in sandy loam and 
peat ; they require very little or no water when 
dormant, and are inci'eased by offsets from the 
bulbs. When any of the tender kinds are planted 
out in the open border, they should be taken up in 
autumn, and placed in a dry room free from frost, 
and planted out again early in spring. Synonyme : 
1 . Scilla maritima. 
alliaceum . . . White. . 9, G. BL P. Chile . . 1821 
iurabicum . . . White . . 6, F. Bl. P. Egypt . . 1629 
aureum .... Yellow . 6, G. Bl. P. C. G. H. . 1790 
barbatum . . . White . . 6, G. BL P. C. G. H. . 1795 
BergH .... WhL grn. 3, G. BL P. . 1816 
biflortim . . . White . . 4, G. BL P. Peru . .1832 
bifolium . . . Wliite . . 8, G. BL P. Chile . . 1831 
biachvstachys . . White . . 3, G. BL P. Dahuria . 1821 
bulbl/erum . . White. . 4, H. BL P. Russia . . 1821 
caudatum . . . WhL gm. 5, G. Bl. P. C. G. H. . 1774 
chloroleucum . . Grn. whL 7, G. BL P. Valparaiso . 1834 
ciliatum . . .White. . 4, G. BL P. C. G. H. .1819 
coarctatum . . AVht. gp^n. 6, G. BL P. C. G. H. . 1804 
comosum ... White . . 7, H. Bl. P. Austria . 1596 
coDcInnum . . . White . . 5, F. BL P. Portugal . 1797' 
conicum . . . WhL grn. 6, G. Bl. P. C. G. H. . 1823 
corymbosum . . ~Wht. grn. 6, F. BL P. Chile . . 1823 
crenulatum . . White. . 4, F. Bl. P. C. G. H. . 1816 
elatum .... White . . 3, F. BL P. Egypt . . 1804 
exscapum . . . White . . 5, H. BL P. Italy . .1824 
fimbriatum . . White . . 2, H. Bl. P. Crimea . . 1820 
flavissimum . . Yellow . 6, G. BL P. C. G. H. . 1804 
fuscatum . . . Light . . 6, G. BL P. C. G. H. . 1820 
geminidorum . . Gmsh. wht. G. Bl. P. Lima . . 
hispidum . . . White . . 6, G. Bl. P. C. G. H. . 1824 
ixioides .... White. . 5, F. BL P. California . 1796 
juncifblxum . . White. . 7, F. Bl. P. C. G. H. . 1794 
lacteum . . . White. . 6, G. Bl. P. C. G. H. . 1796 
latifdllum . . . White. . 6, F. Bl, P. Egypt . .1629 
longibracteStum . White. . 6, G. Bl. P, C. G. H. . 1817 
macu latum . . White . . 5, F, BL P. C. G. H. . 1823 
miniatum . . . Yellow . 6, F. Bl. P. C. G. H. .1790 
montanum . . . White. . 6, H. BL P. Italy . . 1824 
narbonensS. . . White. . 7, H. Bl. P. S. Eur. . .1810 
niveum .... White . . 5, G. BL P. C. G. H. . 1774 
notatum ... . 7, G. BL P. C. G. H. . 1825 
nutans .... "White . . 6, H. Bl. P. Britain . . 
odoratum . . . Pa. yel. . 5, G. Bl. P. C. G. H. . 1795 
ovatiim .... White . . 5, G. Bl. P, C. G, H. . 1824 
pilostim .... White . . 5, G. BL P. C. G. H. . 1826 
polyphyllum . . White . .6,0. BL P. C. G. H. . 1824 
prasinum . . . Green . . 6, G. BL P. C. G. H. . 1816 
pyramidale . . "White. . 6, H. BL P. Spain . . 1752 
pyrenaicum . . Green . . 6, G. Bl. P. England 
refractum . . . White . . 5, H. BL P. Hungary . 1820 
revolutum . . . Wliite. . 5, G. BL P. C. G. H. . 1795 
rupestre . . . White . . 5, G. BL P. C. G. H. . 1795 
secundum . . . White . . 8, 0. BL P, C. G. H. . 1826 
sciUoides . . .White. . 6, G. BL P. C. G. H. .1795 
Squilla, 1 . . . White . . 5, F. BL P. S. Eur. . . 1829 
stechyoides . . Li. veL . .5, H. Bl. P. S. Eur. , .1771 
suaveolens . . . White . .6,0. BL P. C. G. H. . ] 826 
tenellum . . . White . .6,0. BL P. C. G. H. . 1818 
tenuifolium . . White , . 4, 0. BL P. C. G. H. . 1819 
thyrsoldes . . . Yellow . 6, G, BL P. C, 0. H. . 1757 
flavescens . . Yellow . 6, F. BL P. C. G. H. . 1800 
trlgyntim . . , Wht. grn. 6, F. Bl. P. . 1825 
umbellatum . . White . . 5, H. BL P. England 
unifolium . . . Green . . 6, G. BL P, Gibraltar . 1805 
Virens . . . .White. . 6, G. BL P. Del. Bay . 1823 
Ornithoglossum, Salisbury. From ornis, a bird, and 
glossa, a tongue ; resemblance of the petals. Linn. 
6, Or. 3, Nat. Or. Melanthaceos. Ornamental plants ; 
for culture and propagation, see Ornithogalum. 
Synonyme : 1 . Melanthium viride. 
undulatum . . . Green . 9, G. BL P. C. G. H. . 1825 
virlde, 1 ... Green . 10, G. Bl. P. C. G. H. . 1788 
2 G 
