Nudus, 471.

Nullinervis, 483.

Nullus, 494.

Number, 494.

Numerous, 494.
Nut, 227.

spurious, 230.

Nutans, 487.

Nux, 228, 229. 251. 236.
baccata, 241.

Ob, 496.

Oblique, 134. 458. 486.
Oblong, 456.
Obtuse-angled, 449.
Obtusus, 459.

plants, 258.

Nucamentum, 155.
Nucleus, 77. 213, *214. 249. 272. 275. Organs, elementary, *1. 296.
proligerous, 272.

Nucula, 231. 239.

Nuculanium, 235. *239.

cum acumine, 459.

Obvolute, 484.
Obvolutiva, 484.
Ocellated, 481.
Ochraceus, 479.
Ochrea, 144, 145.
Ochre-colour, 479.

Ochroleucus, 479.

Octa, 495.

Octo, 495.

tution of, 289.

Organs of plants, directions taken
by the, 406.

Organs, spurious elementary, 37.
of vegetation, 146.

Orgya, 474.
Orgyalis, 474.

chemical consti-

inferior, 194.

parietal, 194.

superior, 194.

origin of, 558.
structure of, 558.