Metaphloem 



Mlcrodlodange 



Metaphlo'em( + PHLOEM), VanTieg- 

 hem's term for a simultaneous 

 growth of bast - tissue with the 

 METAXYLEM ; Metapny'ta (Qvrov, 

 a plant), (1) plants which mani- 

 fest sexuality or indicate by ac- 

 cessory characters that in their 

 ancestral lines sexually complete 

 progenitors have occurred ; (2) 

 plants with tissue differentiation ; 

 cf. PROTOPHYTE, adj. metaphy'tic ; 

 Met'aplasm (TrXda-^a, moulded), 

 Hanstein's term for the proto- 

 plasm which contains the forma- 

 tive or granular material ; Met- 

 aplas'tid, used to designate the 

 metaphytic organism (Moore) ; 

 Met'asperm ((nrfp/j.a, seed), (1) a 

 sporophyte in which the egg-organ 

 is aborted, and no purely vegeta- 

 tive cells are to be found in either 

 male or female plants ; (2) a syno- 

 nym for Angiosperms ; (3) applied 

 by Boulger for the large-celled 

 secondary prothallium in Sda- 

 ginella, the secondary endosperm 

 in Gymnosperms, and the endo- 

 sperm, originally so-called, formed 

 after fertilisation by the division 

 of the secondary nucleus of the 

 embryo - sac in Angiosperms ; 

 metasper'mic, metasper'mous, 

 angiospermous ; Metaspor'ophyte, 

 Macmillan's expression for a Cryp- 

 togam of the highest s specialisation, 

 as Selagindla. 



Metas'tasis (^erda-TCKm, a removing), 

 (1) the sum of the changes undergone 

 by the products of assimilation in 

 the cells ; metabolism ; (2) the 

 shifting of an organ to some usual 

 position (Moquin-Tandon). 



Metax'in (/j-era^v, between), a proteid, 

 the material of the fibrils of plastids 

 (Schwarz) ; Metaxy'lem ( + XYLEM), 

 the centrifugally formed vascular 

 bundles superposed to the liber 

 bundles (Van Tieghem). 



meteor'ic (Mod. /j-ereupos, in mid air), 

 applied to flowers whose expansion 

 depends upon the weather. 



metis'toid (WTIS, counsel, efSos, like), 

 composed of differentiated cells, 



each cell being dependent on the 

 other cells of the organism ( Hartog). 



metoe'cious (/j.tra, beyond, of/cos, 

 house), existing on different hosts, 

 heteroecious ; metox'enous (fecos, 

 a host) is a synonym. 



Metrogonid'ium (fj.rjT->]p, mother, + 

 GONIDIDM) = HETEROCYST. 



Mette'nian Glands, organs peculiar 

 to Plumbagineae which secrete 

 mucilage and sometimes chalk. 



Me'tuloids (metula, a small pyramid, 

 eI5os, like), modified cystidia, en- 

 crusted with lime, which project 

 from the hymenium of Peniophora, 

 giving it a velvety appearance. 



Miasm', Mias'ma (/u'aoyxa, defilement), 

 Naegeli's term for those diseases 

 which are due to microbes. 



Micella (L. Lat. from mica, a crumb), 

 an aggregation of molecules in the 

 manner of a pleon, but in larger 

 numbers (Nageli); micel'lar Ag'gre- 

 gate, a combination of Micellae. 



Micran dre (fuicpos, small, dvrjp, dvSpos, 

 a man) = DWARF-MALE ; micro-aero- 

 ph'ilous (drjp, air, <f>i\eu, I love) Bei- 

 jerinck's term for anaerobic, needing 

 , but little free oxygen ; Microo'asis 

 (/3d<ris, a base), a variety of the car- 

 cerule, as in Labiates ; Mi'crobe, pi. 

 Micro'bia (/3ios, life), Pasteur's term 

 for such organisms as Schizomycetes, 

 bacteria ; adj. microbio'tic ; Micro- 

 cen'trum (centrum, Kevrpov, a sharp 

 point), applied to the granular 

 inclusions in the astrosphere of 

 leucocytes, probably the equiva- 

 lent of Centrosome (Farmer) ; 

 Micrococ'cus, pi. Micrococ'ci (KOKKOS, 

 a kernel), a genus of bacteria, 

 sometimes used to express mi- 

 crobiotic organisms ; Microcon'id, 

 Microconid'ium (+CONIDIUM), the 

 smaller conidia, when two sizes 

 are produced ; Mi'crocyst (KVVTIS, a 

 bag), an amoeboid cell which is sur- 

 rounded by a membrane, the rest- 

 ing state of swarm-cells of Myxo- 

 gastres ; Mi'croderm (5ep/j.a, skin), 

 = MICROBE ; Microdi'odange ( + 

 DIODE, dyyewv, a vessel), Van 

 Tieghem's term for pollen-sac ; 



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