Nocturnal 



OF BOTANICAL TERMS. 



Nucleus 



NdCTUR'NAL, lasting through a 

 night, or occurring at night. 



NOD'DInG, see Cernous. 



NODE, the place on a stem where 

 one, two, or more leaves are 

 attached; any knot or swell- 

 ing; a point of intersection, as 

 of threads in reticulated proto- 

 plasm. 



NODf F'EROUS, bearing nodes. 



NODOSE', knotted; with swollen 

 joints; swollen at intervals. 

 Compare Moniliform. 



NdD'ULE, a small knot or round- 

 ed body. 



NODULOSE, diminutive of No- 

 dose. 



NdR'MAL, according to rule; 

 usual; of the ordinary type 

 or structure. 



NOSOL'OGY, VEGETABLE, see 

 Vegetable Nosology. 



NO'TATE, marked by colored 

 spots or lines. 



NOTORHI'ZAL, see Incumbent. 



NO'TOTRLBE, said of an irregular 

 flower when arranged so that 

 the pollen from the stamens 

 strikes the back of a visiting 

 insect. Compare Sterno- 

 tribe and Pleurotribe. 



NtJCAMENTA'CEOtJS, nut - like, 

 or pertaining to nuts. 



nuc Amentum (obs.), see 



Ament. 



NUCEL'LUS, the nucleus of an 

 ovule. 



NUCIFEROUS, nut-bearing. 



NU'ClFORM, nut-shaped; nuca- 

 mentaceous. 



NU'CLEAR, pertaining to a nu- 

 cleus. 



NU'CLEAR BAR'RilL, a stage in 

 karyokinesis, immediately pre- 

 ceding the nuclear spindle. 



NU'CLEAR DlSZ, see Mother- 

 star. 



115 



NU'CLEAR FIBRILg, see Spin- 

 dle-fibres. 



NU'CLEAR FIL' AMENT, a gen- 

 eral term for the chromatin of 

 a nucleus, which in karyoki- 

 nesis appears as segments of a 

 filament, and in the resting 

 state as a filamentous net- 

 work; chromatic filament. 

 See Chromosome. 



NU'CLEAR PLATE, see Mother- 

 star. 



NU'CLEAR SPINDLE, a spindle- 

 shaped achromatic figure in 

 the nucleus during cell-divi- 

 sion, consisting of slender fila- 

 ments which cross the equator 

 or extend toward it from the 

 poles. It begins to appear in 

 the skein stage, and is com- 

 pleted in the mother-star stage. 



NU'CLEAR STAR, see Aster. 



NU'CLEAR THREADS^ see Spin- 

 dle- fibres. 



NUCLEATED, having a nucleus. 



NU'CLELN, usually employed in 

 the sense of chromatin. By 

 some authors there is believed 

 to be a distiuct chemical sub- 

 stance, a form of protoplasm, 

 which is termed nuclein. 



NU'CLEOLATED, having a nucle- 

 olus. 



NU'CLEOLE, see Nucleolus. 



NUCLEOLUS (pi. Nucleoli), any 

 distinct body of considerable 

 size within a nucleus — not a 

 definite and constant organic 

 structure. There may be "mo re 

 than one. 



NUCLEOPLASM, the more fluid 

 protoplasm of the nucleus be- 

 tween the nuclear threads; ka- 

 ryoplasm. 



NUCLEUS, (1) an organized struc- 

 ture within the living cell by 

 means of which cell-division 

 takes place. It is usually 

 spherical in form, richer in 



