nuclear 
Nut 
Fi’brils, chromosomes, cf. SPINDLE- 
FIBRES; ~ Fil’ament, the chro- 
matin or chromatic filament; ~ 
Plate, see Moruer-Sran; ~ Re- 
duc’tion, when a smaller number 
of segments occur than at the 
previous divisions of the parent- 
cycle (Hartog) ; ~ Ring, the equa- 
torial arrangement of chromo- 
somes ; ¢/. MorHER-STAR ;~ Sap, the 
intermediate matrix (Schwarz) ; ~ 
Spin’dle, slender filaments from the 
poles, and crossing the equator, 
beginning in the skein stage, and 
completed in the mother-star; ~ 
Star = AsTER; ~ Threads = SPINDLE- 
FIBRES ; nu’cleated, having a nu- 
cleus or nuclei; Nu‘clein, Stras- 
burger’s term for CHROMATIN. 
Nu'cleo-cen’trosomes (nucleus, a ker- 
nel), a term used by G. Karsten in 
describing the nuclear division of 
Psilotum triquetrum, Sw.; pro- 
bably the same as Strasburger’s 
“Secretion bodies”; ~ Hy’alo- 
plasm, Strasburger’s word for 
Linin; ~ Id'ioplasm, the forma- 
tive part of the nuclear hyalo- 
plasm; ~ Mi’crosomes ( Stras- 
burger) = CHROMATIN? 
nu'cleolate (nucleus, a kernel), pos- 
sessing a nucleolus; Nu’cleole, 
Nucle’olus, a sharply defined 
point in the cell-nucleus ; nucle’olo- 
Nucle’olus, = ENponucLEus; Nw’- 
cleophyses (¢¥w, I grow), tubular, 
septate projections in certain 
Fungi which correspond to the 
base of the perithecium, and ulti- 
mately become ascophyses ; Nu’c- 
leoplasm (7\dopva, moulded ) nuc- 
lear protoplasm, the nucleo-hyalo- 
plasm of Vines; Nucleopro’teid 
(+ ProreIp), any protein which is 
a characteristic constituent of the 
nucleus. 
Nu’cleus (Lat. a kernel), (1) the 
kernel of an ovule or seed, the 
Nucexivs; (2) an organised pro- 
teid body of complex substance ; it 
contains one or more nucleoli, and 
divides either directly by Frae- 
MENTATION, or indirectly by Karyo- 
171 
KINESIS, otherwise called Mrrosis; 
(3) the hilum of a starch granule ; 
(4) in Lichens, the disk of the apo- 
thecium, containing asci; (5) in 
Fungi, the centre of the peri- 
thecium ; (6) a clove or young bulb; 
~ Bar’rel = NUCLEAR BARREL; ~ 
of the Em’bryo Sac, the secondary 
nucleus; ~ of O’osphere, that in 
the oosphere (female pronucleus) 
with which a spermnucleus (male 
pronucleus) coalesces to form a 
germ nucleus; closed ~, that kind 
of nucleus which occurs in the 
higher plants, cf. Op—N ~; gam’eto- 
~, the nucleus of a gamete ; gen’era- 
tive ~, an active nucleus in karyo- 
kinesis ; Germ ~, a nucleus result- 
ing from the fusion of a male and 
female pronucleus; ¢/. PRONUCLEUS; 
O’pen ~ the central body of Phyco- 
chromaceae, of much looser struc- 
ture than in higher plants, and 
destitute of true nuclear mem- 
brane (Hieronymus) ; Rejec’tion ~, 
sister-nuclei to the female nucleus 
which play no part in fertilization ; 
(Hartog); ~ Spin’dle NUCLEAR 
SPINDLE. 
Nucula’‘nium (nucwa, a small nut), 
Richard’s term for a drupaceous or 
baccate fruit containing more than 
one stone or seed, adopted by 
Lindley for a superior stony-seeded 
berry, such as a grape; Nu’cule, 
Nuc'ula, (1) a diminutive of Nur- 
LET ; (2) the female sexual organ of 
Chara ; nuculo’sus (Mod. Lat.), con- 
taining hard nut-like seeds, 
nucumenta’ceous, an error for NUCA- 
MENTACEOUS, 
nude, nu'dus (Lat. naked), bare, 
naked, in various senses. 
nudicau’lous, nudicau’lis (nudus, 
naked, caulis, a stem), naked stem- 
med, not leafy; nudius’culus (Lat. ), 
somewhat bare. 
nulliner’vis (nuwlus, none, nervus, a 
nerve) = ENERVIS. 
nu’merous, numero'sus (Lat., very 
many), in botany indefinite, not 
readily counted ; the sign is o, 
Nut, Nux (Lat.), a hard and indehi- 
