octandrous 
with eight stamens; octan’drous, 
having eight stamens. 
Oc’tant (octans, a half-quadrant), the 
division of an oospore; ~ Wall, 
applied to the septum which cuts 
the oospore into octants. 
octan’therous (xr, eight, dvAnpos, 
flowery), having eight fertile sta- 
wens ; octari’‘nus (dppyv, a male), 
Necker’s term for ocranDROUS. 
octofa’rius (L. Lat.), in eight ranks or 
rows. 
octog’ ynous = OCTAGYNOUS. 
octoloc’ular (océo, eight, loculus, a little 
ince): applied to an eight-celled 
ruit or pericarp; octopet’alous, 
-lus (wéradoy, a flower-leaf), with 
eight petals; octora’diate (radius, 
a ray), with eight rays, as some 
Compositae ; octosep’alous (-+SEPA- 
LuM), with eight sepals; octo- 
sper’mous (omépua, seed), eight- 
seeded ; Oc’tospore (copa, seed)= 
the Carposporse of Porphyraceae ; 
octosp’orous, eight-spored ; octo- 
ste’monous (o77juwv, a thread), with 
eight fertile stamens ; octos‘tichous, 
-us (rlxos, a series), in eight rows. 
oc'ulate (ocwus, an eye)=OCELLATE ; 
Oc‘ulus, (1) the first appearance of 
a bud, especially on a tuber ; (2), 
the depression on the summit of 
some fruits, as the apple. 
-odes (eldos, resemblance), a suffix for 
similar to ; as phyllodes, like a leaf. 
oddly pin’nate, with a terminal leaf- 
let, imparipinnate. 
odora’tus (Lat.), fragrant, usually 
restricted to sweet smelling O’dours, 
which, in flowers, are sometimes 
due to essential oils which can be 
distilled off; at other times the 
scent cannot be collected by chemi- 
cal means. 
Oede’ma (oldnua, a swelling), + the 
tumid glands on woody tissues of 
Conifers. 
Oecology (olkos, w house, Adyos, a 
discourse), the study of plant-life 
in relation to environment ; adj. 
oecolog’ical ; Oecol’ogist, a student 
of the life of the plant in relation 
to its surroundings ; Norr.—these 
oligodynamic 
words are frequently spelled, Ecol’- 
ogy, ecolog’ical, Ecol’ogist. 
offici’nal,officina’lis (Lat.,of the shops), 
used of medicinal or other plants 
procurable at shops. 
Off’set, a lateral shoot used for propa- 
gating, as in the houseleek ; Off- 
shoot, an offset. 
often-bear’ing, producing more than 
once in the season, multiferous. 
-oides, -odes, -ides, -oideus, suffixes 
from eléos, resemblance; as petal- 
oideus, resembling a petal. 
Oid'ium, pl. Oid’ia (wor, an egg, + ld.ov, 
a diminutive), a term used to de- 
note concatenate conidia (Cooke) ; 
not to be confounded with the 
form - genus Oidium, Link, the 
conidial stage of Erysipheae. 
Oil, used for any fluid fat-bodies in 
plants, chiefly stearic, palmitic, or 
oleic acids; ~ Cells, gum-cells ; ~ 
Plas’tids, ELAIOPLASTS; ~ Tube, a 
synonym of VittTa in the fruit of 
Umbelliferae. 
oleag’inous, -us (oleagineus, pertaining 
to the olive), oily and succulent. 
o'leic (oleum, olive oil) Ac’id, a glycer- 
ide or fat occurring in plants ; 
O'lein or O'leine, one of the vege- 
table fats. 
ol’ens (Lat.), smelling, 
sweetly odorous. 
Oleores’in (olewm, olive oil, + RESIN), 
the natural admixture of a resin 
and an essential oil, forming a 
vegetable balsam or turpentine. 
olera’ceous, olera’ceus (Lat., herb- 
like), (1) having the nature of a 
pot-herb, esculent; (2) + growing 
in cultivated places (De Candolle). 
Olib’anum (Arab., ol or al, the, 
Luban, milk), a bitter and aromatic 
gum-resin from several species of 
Boswellia, the frankincense of com- 
merce. 
oligan’drous, -rus (é\lyos, few, avip, 
dvdpos, a man), with few stamens ; 
oligan’thous, -thus (dv0os, a flower), 
few-flowered ; oligodynam’ic (dvva- 
jus, power), Naegeli’s term for the 
poisonous condition of water con- 
taining minute traces of copper 
especially 
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