megarhizous 



melastomaceoas 



megarhi'zous {piCa, a root), large- 

 rooted ; megascop'ic {ffKoirfw. I see), 

 vision with the naked eye ; Mega- 

 80'rus {-\- SoRUs), a sorus which 

 gives rise lo megasporaugia in 

 Balvinia ; Kegasporan'ge [four 

 syll. ] (o-iropa, seed; 0776401', a vessel), 

 a sporaugiuin which produces niega- 

 spores ; Meg'asyore, the more correct 

 foimof Macrospoue, (1) the larger 

 spores of vascular Cryptogams ; (2) 

 used for OvuhE; (3) = Embryo-sac ; 

 pri'mary ^, the megaspore mother- 

 cell (Gibbs) ; Megaspor'ocarp [Kapiths, 

 fruit), the development of the 

 megasporangium in AzoUa, Unally 

 containing the single perfect mega- 

 spore ; Mtgaspor'ocyte [kvtos, a 

 hollow vessel), the early state of 

 the embryo-sac ; Megasporogen'esis 

 {yiv^cris, beginning), the develop- 

 ment of a megaspore; Megaspor'o- 

 phyll(<?)uAAoj/, a leaf), (l)a carpel; (2) 

 a sporophyll which bears megaspores; 

 Meg'atherm, adj , megather'inic, 

 the correct forms of Macrotherm, 

 MACKOTHERMic, requiring much 

 heat, as tropical plants ; Mega- 

 zo'oidB [C^cv, an animal; fihos, resem- 

 blance), large motile daughter-cells 

 of certain unicellular Algae (Hazen) ; 

 Megazoosporan'ge (o-Tropa, a seed ; 

 0776 4 ov, a vessel), in IJydrodictyon , 

 the special sporangium wiiich con- 

 tains a swarm of megazoospores, 

 the protoplasm of a cell giving 

 rise to a large number, each pro- 

 vided with four cilia ; Megazo'ospore 

 (-f Zoospore), a motile spore, larger 

 than those termed Microzoospores ; 

 Meg'ecad {4-Ecad), a gi-oup of 

 several ecads of close affinity. 



MegiB'totherm {depf^os, hot), a plant 

 requiring high uniform tenjjjerature ; 

 adj. megistotherm'ic. 



meiogy'rouB {fj-fiuiv, less;yvphs, round), 

 rolled inwards a little ; mei'on, 

 prefixed to an organ, shows it is less 

 than some other organ understood ; 

 Meiophyl'ly {(pvXKoy, a leaf), dinu- 

 nution in number of the leaves in a 

 whorl, as compared with the pre- 

 ceding whorl. 



Meio'sis (ixeicoffis, reduction), applied 

 to reduction divisions of chromo- 

 somes (Farmer and Moore) ; adj. 

 meio'tic ; ~ Euapog'amy, when the 

 nuclei of the mother-cells of the 

 sporophyte liave the haploid number 

 of chromosomes. 



Meiosporan'ge {iJ.dwu, less ; -f Spor- 

 angium), Sauvageau's name for the 

 Smaller plurilocular sporangia en- 

 closing zoospores of Edocarpus 

 viJTSce/iSjThuret; Mei'ostates{(rTaTj»s, 

 a standing), the intermediate pro- 

 ducts of metabolism, comprising 

 (a) Anastates, formed during 

 anaboiism, and (6) Katastates, 

 during katabolism (Parker) ; mei- 

 oste'raonous {<xri]ixwv, a filament), 

 with fewer stamens than petals ; 

 Meiotax'y (ra^ts, order), the sup- 

 pression of entire whorls ; Mei'othenn 

 {OepfjiT}, heat), a plant inhabiting 

 cool temperate regions ; all are hardy 

 in Englau'l. 



Melampy'rine, Melampy'rite, a sub- 

 stance occurring in Melampyrum 

 ncDwrosum, Linn. ; the same as 



DULCITE. 



melangeoph'ilus (jtieAas, black ; 7^, 

 earth ; <pikiu>, I love), dwelling in 

 h am ; Melangeophy'ta {(pvrhy, a 

 plant), loam plants; Melaugeo- 

 phyti'a, loam or alluvium plant 

 formations (Clements) ; Mel'anin, 

 a black pigment of bacteria ; 

 Mel'anism, a disease producing 

 blackness; melanochlor'us {x^^P^^> 

 pale green), blackish green, atro- 

 virens; Meranopliyll, the chief 

 colouring matter of Diatoms (Warm- 

 ing, Handbook, Engl, ed., p. 18); 

 melanopliyrius {<pv\\ov, a leaf), 

 having leaves of a dark colour; 

 melanosperm'ous {a-nep/xa, seed), 

 having dark-coloured seeds or spores. 



melasmat'ic {ixiXacr/xa, black spot) Tis'- 

 sue, a group of large cells round the 

 vascular bundles in the stems of 

 Calamites, with dark brown or black 

 contents. 



melastoma'ceous, resembling or per- 

 taining to those plants of which 

 the genus Melastoma is tlie type. 



226 



