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 pi. of ego, I), used as 

 an authority in defining species, 

 etc. 



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 

 NODE ; ~ Cell, a cell at the base of 

 the oogonium in Chara interposed 

 between the egg-cell and the sta Ik- 

 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. Ixii. ; nodif- 

 erous (fero, I bear), bearing nodes ; 

 no'dose, nodo'sus (Lat. knotty), 

 knotty or knobby, chiefly used of 

 roots; Nodo'sity, Nodo'sltas (Lat., 

 knottiness), a woody swelling ; 

 Nod'ule, No'dulus (Lat., a little 

 knot), a small knot or rounded 

 body ; ~ of Diatoms = STAUROS ; 

 no'dulose, nodulo'sus, the diminu- 

 tive of NODOSE. 



No'menclature (nomendatura, 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 (j-6/xos, custom, \dyos, dis- 

 course), relating to the laws which 

 govern the variations of organs ; 

 nomosper'mous (o-Trfy/m, 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 (j/6croj, disease, \dyos, a dis- 

 course), see VEGETABLE NOSOLOGY. 

 Nos'toc-lay'er, in Lichens when the 

 Algal layer consists of Nostoc or 

 allied forms (De Bary). 

 notate', nota'tus (Lat. marked), 



marked with spots or lines. 

 noteropn'ilous (vorepbs, moist, 0iXew, 

 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 

 a par* site. 



nototri'bal (V&TOS, the back, rplBu, I 

 beat), pertaining to those flowers 

 described by Delpino as no'totribe, 

 whose stamens and styles tuin 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. 

 nuciferous (mix, a nut, fero, I bear), 

 bearing or producing nuts ; nu'ci- 

 form (forma, shape), nut-like in 

 shape. 



nu' clear (nucleus, a kernel), pertain- 

 ing to a nucleus ; ~ Bar'rel, a 

 stage immediately preceding the 

 nuclear spindle ; ~ Disc, the mother- 

 star stage ; ~ Division, either 

 direct by fragmentation, or indirect 

 by karyokinesis, the entire history 

 of the division of the cell-nucleus; ~ 



170 



