440 
ORIGANUM— OSMD ND A- 
late, obtuse, 3-toolhed ; petals obtuse ; spar 
filiform, longer than the germ. 6-12 i. 
jia'vn, (y. .Tu. IX) lip 3-cleft, entire ; mid- 
dle division larger ; spike compact ; bracts 
longer than the flower. 1-2 f. 
Jimhria'tii, (p. Ju. 2^.) lip 3-parted ; lobes 
all incisely fimbriate and wedge form ; 
segments of the perianth oval, spreading, 
fimbriate-toothed ; spur filiform, clavate, 
longer than the germ ; leaves broad-lance- 
olate; purple flowers, in a large spike. 
2 f. Meadows. 
ohKole'tM, (J. 11.) lip oblong, lanceolate, 
undivided ; petals erect ; horn obtu.se, as 
long as the germ ; bracts very short ; root 
oval or palmate. j 
vires"cens, (g. Ju. 2i.) lip lanceolate, ere- ' 
nate ; petals counivent ; bracts longer than 
the flowers; spur sub-inflated, obtuse; root 
fa.scicled. 12-18 i. i 
hy-pcrho' re.n , (g y. Jn. 2^.) lip lanceolate, ' 
as large as the spreading petals; spur sub- : 
uhite, shorter than tlie germ ; spike ovate ; j 
bracts as long as the flowers ; roots fascicled. 
oblnsa'ta, (2_C.) lip linear, very entire, ! 
longer than the horn which is the length of 
the germ; leaf solitary, radical, sub-wedge- I 
form, obtuse ; roots fa.scicled. | 
rotimdijo'lia, (2^.) lip 3-cleft, middle seg- 
ment 2-cleft ; spur shorter than the germ ; 
leaves roundi.sh-oval ; root fascicled. j 
nive'a, (w.) lip linear, oblong, entire ; pe- ' 
tals spreading ; horn filiform, longer than 
the germ ; lower leaves linear, very long, 
upper ones subulate. S. j 
vir"idis, (g w. Ju.) lip linear, 3 toothed at ; 
the apex ; petals connivent ; horn obtuse, i 
euh-itiflated ; bracts much longer than the ! 
flowers ; root fascicled. 3 i. /S. I 
hidcnta'la, lip oval, oblong, 2-toothed at 
tlie base ; petals ovate, expanding ; horn I 
shorter than the thickened germ; leaves 
narrow-lanceolate ; stern nearly naked. 
12-iei. <s\ 
See Habenaria. 
ORIGA'NUM. 13—1. (.Labiates.) [From oros, 
a mountain, and gono, to rejoice, so called 
because it grows upon the mountain sides.] 
vulga're, (wild marjoram, r. Ju. 2j!.) spikes 
round, panicled, heaped ; bracts ovate, 
longer than the calyx. 1-2 f. 
majora'na, (sweet marjoram,^.) spikes 
roundish, ternate, compact, peduncled ; 
eaves petioled, ovai, obtuse, smoothish. 
12 i. Ex. A native of Portugal. 
ORNITHOCALUM. 6—' ' Asphodeli.) [From 
ornis, a bird, and gala, .-nilk, from the color 
of Its flowers.] 
umbella'tum, (star of Bethlehem, M. 2^.) 
flowers corymbed ; peduncles longer than 
the bracts ; filaments subulate. Natural- 
ized. 6-8 i. 
bractea'tum, (p. 2/.) scape bracted, 1- 
flowered, terete; petals lance-oblong, ob- 
lusish; filaments linear; leaves channeled, 
filiform. 4 i. S. 
pyrnmida'Ie, (prussian asparagus,) a na- 
Jve of Spain. 
latifo'lium, a native of Egypt. 
canda'tuvi, Cape of Good Hope. 
OR'NUS. 2—1. (Jasmine<B.) [From the He- i 
brew orn, an asii.] 1 
amcrica'na, (M. .) leafets broad-ovat*i, 
serrate, terminal one obcordate. Shady 
woods. Resembles the genus fraxinus. 
ev.rvp^a, affords the manna of commerce. 
The American ornus is thought by some tc 
be but a variety of this. Ex. 
0ROBAN"CHE. 13-2 (Pediculares.) [From 
orobos, the wild pea, and agckein, to suffocate, 
so called because it twines around the orobos 
and destroys it.] 
unijlo'ra, Tcancer-root, b-w. M. 2i.) stem 
very short; peduncles 2, elongated, scape- 
' form. 1-flowered. naked ; scales smooth, 
concave ; lobes of the corolla oblong-oval, 
with a pubescent, colored margin. 4-6 f 
Parasitic. Woods. 
americn'na, (Ju. 2/.) stem simple, covered 
with ovate-lanceolate, imbricate scales , 
spike terminal, smooth ; corolla recurved 
stamens exserted ; flowers brownish yellow 
the spike covered by the scales of the stem 
6-8 i. Parasitic. Woods. 
ludovicia' na, (p.) pulverulent, pubescent , 
stem low, simple ; flowers and ovate-acute 
scales sub-imbricate ; calyx 2-bracted ; co- 
rolla recurved ; stamens enclosed, smooth 
3-4 i. 
fa-iciaila'ta, (p. Ju.) stem short, simple ; 
peduncles numerous, naked, nearly termi- 
nal, about the length of the stem ; scales 
few, ovate, concave, pubescent. 4-5 i. 
ma'jor, stem erect, somewhat scaly and 
bulbous at the base, terminating in a spike 
of rather large purplish or brownish flow- 
ers. Parasitic. Ex. 
rn'bra, very fragrant, similar in appear 
ance to the preceding species. Ex. 
ORO'BUS. 16—10. (LegurrAnosa.) [From 
erepto, to eat, the root being considered nu- 
tritious.] 
dis"par, (ervum, w-y. J. 2^.) leaves une- 
qually pinnate ; leafets linear, obtuse ; sti 
pules ovate, acute ; racemes sessile. 
tubejo'siis, the heath-pea. The Scotch 
islanders chew the root ; they hold the 
plant in high esteem. Ex. 
ORON"TIUM. 6—1. {AroidaA [From Orontes.-i 
aquaficum, (golden club, y. M. 2^.) 
leaves all radical, lance-ovate ; scape cylin- 
drical, spiked ; flowers with a peculiar 
smell. Water. 1-2 f. 
ORTHOCAR"PUS. 13-2. (Pediculares.) 
[From orthos, erect, and carpos, fruit.] 
lute'us, (y. Ju.) stem simple, terete, hir- 
sute ; leaves alternate, sessile, acute, entire , 
calyx,bracts and leaves viscid-pubescent 
12-14 i. S. 
ORY'ZA. 6—2. (Graminem.) [From orez, 
Arabian.] 
sati'va, (rice, ^.) culm jointed; leaves 
clasping ; panicle terminal. Ex. 
ORYZOP"SIS. 3—1. {Graminem.) [From 
oruza, rice, and opsis, resemblance.] 
aaferifo'lia, (mountain rice, M. IX.) culm 
nakedish; Ifeaves rigid, erect, pungent at 
the point; flowers in a racemose panicle. 
18 i. 
OSMORHI'ZA. (See Urasper"mum.) 
OSMUN"DA. 21—1. (Filices.) [From Oss- 
mund, who first use<l it as a medicine.] 
d wavio'mea, {Hower'mg ievn, y. J Zi..^ 
