mandns 



Nereidion 



mnn'das (Lat.) neat, elegant. 



Ma'tant, add, (2) a total suppression 

 of all lateral buds, giving rise to 

 an unbranched st«m, the " dis- 

 budded ~." (Church); Mu'tants, 

 may be aeqnichromoso'mal ~, 

 with an exchange of chromosomes, 

 or plurichromoso'mal --, -^-ic, 

 when one of the chromosome com- 

 plexes takes one or more chromo- 

 somes of the other in the reduction 

 divisions (Lotsy) ; Mnta'tion, add, 



(1) a simultaneous and probably 

 gradual change, in a majority or 

 the whole of a species (Waagan) ; 



(2) used by De Vries = Saltation, 

 Transilient ; (3), used by Bateson 

 = Blastoqen, i.e. Blastoqenic 

 Variations. 



Mycocie'na (x^atva, a cloak), the 

 fungus-mantle in mycorrhiza (Pey- 

 ronel) ; Mycoc'riny {kpLvw, I separ- 

 ate), humus reduction by fungi 

 (Falck) ; mycophyt'ic {4>vt6v, a plant), 

 belonging to the My'cophytes, or 

 fungi. 



My'onemes (/^u?, muscle ; v^/^a, a 

 thread), contractile mechanism of 

 ectoplasm of flagellates (Minchin). 



Myricarie'tum, an association of 

 Myricaria germanica Desv. 



Myrice'tum, a similar group of 

 Myrica Linn. 



Myr'iomere (^e'po?, a part), a transi- 

 tion from mitosis to amitosis (Delia 

 Valle) ; c/. Pseudomitosis. 



Myriophylle'tum, an association of 

 Myriophyllum Ponted. 



Myrmecophy'tism, the condition of 

 being ant-plants. 



Myrtille'tum, an association of Vac- 

 cinium Myrtillus Linn. (Warming). 



Myxamoe'bae (a/ioijSi/, change), uni- 

 nucleate organisms passing into 

 Myxoflagel'lates, having developed 

 flagella. 



Myxophy'cin, a form of carotin occur- 

 ring in Myxophyceae (Chodat) ; 

 Myxocbimae'ra (+Chimaera), the 

 plasma of Mucor Mich., when para- 

 sitized by Chaetocladium Fres. 

 (BurgefiF); Myxochromoso'mes ( + 

 Chromosomes), paired chromo* 



somes ; Myxopod'ia, pi. (-f Podium), 



cf. PSEUDOPODIUM ; MSTZOSO' 1X168, = 



Dyads (Chodat). 



n generation has the nucleus with 

 haploid number of chromosomes; 

 2n generation has diploid number. 



N and P i'ons, nitrogen and phos- 

 phorus in plankton (Church). 



nannan'drous, addt (2) used of an- 

 theridia from small male plants 

 attached to the female filaments 

 near the oogonia of Oedogonium 

 Link (West) ; Nanan'drinm = 

 Nannander; Nannoplank'tonts (-f 

 Plankton, ovra, things existing), 

 items comprising the nannoplank- 

 ton; Nan'ophyll, Raunkiaer's term 

 for a small leaf, 9x25 sq. millim. 



Narde'tum, an association of Nardus 

 Linn. 



Necrid'ia {v€Kp6s, dead), dead cells 

 in algae (West); Nec'ron, dead 

 plants, not yet turned, into humus ; 

 adj. necroni'sed (Sernander); Nec'- 

 ton, cf. Necron. 



Nectar'ia, pi. (+ Nectarium), used 

 to denote peloria with every petal 

 or sepal spurred; Nectarose'ma 

 {a^li-a, a mark), Errera's term for 



NeCTAROSTIQMA; 



Ne'matea {vrjixa, vi^fiaros, a thread), 

 a flagellate consisting of a linear 

 series of plastids (Janet) ; nema- 

 the'cioid (ciSo?, form), resembling 

 a nemathecium ; Nemathecium, add, 

 (2) cor'tical ~, occurring in cortical 

 cells ; medullary ~, consisting of 

 loosely packed thread in the interior 

 of an algal thallus (Phillips). 



Neog'amous, precocious syngamy in 

 early stage of gametocyte (Minchin) ; 

 Ne'o-Men'delism, modem develop- 

 ments of Mendelian doctrine ; neo- 

 phyt'ie (<^utoV, a plant), applied to 

 fossil Tertiary plants (Clements); 

 neotrop'ic, pertaining to the tropics 

 of America (Campbell) ; cf. palaeo- 

 tropic. 



nephro'dioid, resembling or akin to 

 Nephrodium Rich. 



Nereid'ion, an association of water- 

 plants (Moss). 



452 



