niveous 
nuclear 
in or near the snow; (2) snow- 
white, more correctly NIVEOUS. 
niv’eous, niv'eus (Lat., snowy), snow- 
white; pure and lustrous. 
no’bis (dative pl. of ego, I), used as 
an authority in defining species, 
ete. 
Nocona’mum (deriv.?) Necker’s term 
for the sporangium of Selaginella (?) 
noctur’nal (nocturnalis, by night), 
occurring at night, or lasting one 
night only. 
no’dal (nodus, a knot), relating to a 
Nove; ~ Cell, a cell at the base of 
the oogonium in Chara interposed 
between the egg-cell and the stalk- 
cell, with the ‘‘ Wendungszelle,” 
~ Di‘aphragm, any septum which 
extends across the hollow of the 
stem at a node. 
nod‘ding, hanging down, nutant. 
Node, No'dus (Lat., a knot), that part 
of a stem which normally has a 
leaf or a whorl of leaves; the 
“knot” in a grass-stem; Lindley 
gives the following modifications : 
closed ~~; com’pound ~ ; di’vided ~ ; 
entire’ ~; o’pen ~; sin’gle ~; see 
his Glossary (1849), p. lxii.; nodif’- 
erous (fero, I bear), bearing nodes; 
no’dose, nodo’sus (Lat. knotty), 
knotty or knobby, chiefly used of 
roots; Nodo’sity, Nodo’sitas (Lat., 
knottiness), a woody swelling ; 
Nod'ule, No'dulus (Lat., a little 
knot), a small knot or rounded 
body; ~ of Diatoms = Stavros; 
no’dulose, nodulo’sus, the diminu- 
tive of NODOSE. 
No’menclature (nomenclatura, a list of 
names), the names of things in 
any science; in botany frequently 
restricted to the correct usage of 
scientific names in taxonomy. 
Nomolo’gia (yéuos, custom, Adyos, dis- 
course), relating to the laws which 
govern the variations of organs ; 
nomosper mous (o7épua, seed), used 
by Radlkofer to denote the seed 
normally occurring in the order, 
tribe, or genus. 
no’nus (Lat)., ninth. 
nor’mal, norma’lis (Lat.), according to 
square, according to rule, usual as 
to structure, 
Nosol’ogy (véc0s, disease, Ao’yos, a dis- 
course), see VEGETABLE NosoLoey. 
Nos‘toc-lay’er, in Lichens when the 
Algal layer consists of Nostoc or 
allied forms (De Bary). 
notate’, mnota’‘tus (Lat. marked), 
marked with spots or lines. 
noteroph’ilous (vorepds, moist, puréw, 
I love), applied to plants which 
are intermediate between hydro- 
phytes and xerophytes ; by Warm- 
ing termed mesophytes. 
notched, emarginate, nicked. 
noth’us (Lat.), false or bastard, 
usually applied to the false root of 
@ parasite. 
nototri’bal (vdros, the back, rpifw, I 
beat), pertaining to those flowers 
described by Delpino as no’totribe, 
whose stamens and styles turn so 
as to strike their visitors on the 
back ; notorrhi’zal (p'ifa, a root), 
used for incumbent; the radicle 
being on the back of the coty- 
ledons in certain Cruciferae. 
no’vem (Lat.) nine; ~ digita’tus, 
nine-fingered; ~ lo’bus, nine- 
lobed ; ~ner’vius, nine-nerved. 
Nucamen’tum (Lat., a fir-cone or 
catkin), an amentum or catkin; 
nucamenta’ceous, -ceus, (1) having 
the hardness of a nut ; (2) synonym 
for indehiscent, monospermal fruit. 
Nucel’la, = Nucel’lus (Lat., a small 
kernel), (1) the nucleus of an 
ovule; (2) the body of the ovule 
or macrosporangium containing the 
embryo sac or macrospore ; Nucel’- 
lum, Germain’s form of NucELLUS. 
nucif’erous (nux, a nut, fero, I bear), 
bearing or producing nuts; nv'ci- 
form (forma, shape), nut-like in 
shape. 
nuclear (nucleus, » kernel), pertain- 
ing to a nucleus; ~ Barrel, u 
stage immediately preceding the 
nuclear spindle; ~ Disc, the mother- 
star stage; ~ Divis‘ion, either 
direct by fragmentation, or indirect 
by karyokinesis, the entire history 
of the division of the cell-nucleus; ~ 
170 
