200 
VOCABULARY. 
yiger. Black. 
Nit'idus. Glossy, glittering. 
Niv'eus. Snow-white. 
Nod'ding. Partly drooping. 
I^'ode, Nodus. Knot. 
No'men. A name. 
Notch' ed. SeeCrenate. 
Nu'cleus. Nut, or kernel. 
Nu'dus. See Naked. 
Nut, Nux. See Nucleus. 
Xu'tant. See Nodding, Pendulous. 
O 
Ob. A word which, prefixed to other 
terms, denotes the inversion of the 
usual position ; as, obcordate, which 
signifies inversely cordate. 
Obcon'ic. Conic with the point down- 
wards. 
Obcor'date. Heart-shaped with the 
point downwards. 
Oblance' olate. Lanceolate with the base 
the narrowest. 
Oblique. A position between horizon- 
tal and vertical. 
Oblong. Longer than oval, with the 
sides parallel, 
Obo'vate. Ovate with the narrower end 
towards the stem, or place of insertion. 
Ob'solete. Indistinct, appearing as if 
worn out. 
Obtuse. Blunt, rounded, not acute. 
Ochraceous. Colour of yellow ochre. 
Odora'tus. Scented, odorous. 
Offici7ia'lis. Such plants as are kept for 
sale as medicinal, or of use in the arts. 
Oirf, Oi'des. This termination imports 
resemblance, as petaloid,Uke a petal; 
thaliciroides, resembling a thalictrum, 
&c. 
Opaque. Not transparent. 
Oper'culum. The lid which covers the 
capsules of mosses. 
Opposite. Standing against each other 
on opposite sides of the stem. 
Orbic'ular. Circular 
Orchid'eous. Petals like the orchis, 
four arched, the fifth longer. 
OrnithoVogy. That department of zo- 
ology which treats of birds. 
Os. A bone. A mouth. 
Os'seous. Bony, hard. 
O'vary. A name sometimes given to 
the outer covering of the germ, be- 
fore it ripens. 
O'vate. Egg-shaped, oval with the low- 
er end largest. 
Ovip'arous. Animals produced from 
eggs, as birds, &c. 
Ovules. Little eggs : the rudiments of 
seeds which the germ contains be- 
fore its fertilization ; after which the 
ovules ripen into seeds. 
O'wim An egg. 
P 
Pal' ate. A prominence in the lew ft 
hp of a labiate corolla, closing or 
nearly closing the throat. 
Palea'ceous. See Chaffy. 
Pal'mate. Hand-shaped; divided so 
as to resemble the hand with the fin- 
gers spread. 
Palus'tris. Growing in swamps and 
marshes. 
Pan'ide. A loose, irregular bunch ot 
flowers with subdivided branches, 
as the oat 
Pan'ided. Bearing panicles 
Panex'tern. The outer covering of the 
pericarp. 
Panin'tern. The inner covering of the 
pericarp. 
Papil'io. A butterfly. 
Papiliona'ceous. B utterfly-shaped, — an 
irregular corolla consisting of four 
petals; the upper one is called the 
banner, the two side ones v/ings, and 
the lower one the keel, as the pea. 
Mostly found in the class Diadel- 
phia. 
Papil'lose. Covered with protuberan- 
ces. 
Pappus. The down of seed, a.s the dan- 
delion; a feathery appendage. See 
Egret. 
Parisit'ic. Growing on another plant 
and deriving nourishment from it. 
Paren'chyma. A succulent vegetable 
substance; the cellular substance; 
the thick part of leaves between the 
opposite surfaces ; the pulpy part ol 
fruits, as in the apple, &c. 
Partial. Used in distinction to general. 
Parti'tion. The membrane which di- 
vides pericarps into cells, called the 
dissepiment. It is said to be parallel 
when it unites with the valves where 
they unite with each other. It is con- 
trary or transverse when it meets a 
valve in the middle or in any part not 
at its suture. 
Parted. Deeply divided; more than 
cleft. 
Patens. Spreading, forming less than a 
right angle. 
Pau'd. Few in number. 
Pec'tinate. Like the teeth of a comb, 
intermediate between fimbriate ai.J 
pinnatifid. 
Pedate. Havin g a central leaf or seg- 
ment and the two side ones which 
are compound, like a bird's foot. 
Ped'icel. A little flower-stalk, or par- 
tial peduncle. 
Pe.dun'cle. A stem bearing the flowpi 
and fruit. 
PcVlicle. A thin membranous coat. 
Pellu'cid. Transparent or limpid. 
