Metaphylla 



Metuloids 



Metaxylem ; Metaphyira, pi. 

 {<piK\ov, a leaf), the mature leaf, as 

 opposed to the juvenile form (Goe- 

 bef); Metaphy'ta {(pvrhv, a plant), 



(1) plants which manifest sexuality 

 or indicate by accessory characters 

 that in their ancestral lines sexually 

 complete progenitors have occurred ; 



(2) plants Vith tissue differentiation ; 

 cf. Protophyte, adj. metaphy'ti6 ; 

 Met'aplasm {nxdarfia, moulded), 

 Hanstein's terra for the protoplasm 

 which contains the formative or 

 granular material ; metaplast'ic 

 {irXacrrhs, moulded), formed of 

 Metaplasm ; Metaplas'tid, used to 

 designate the metapliytic organism 

 (Moore) ; Metaplas'y, any progres- 

 sive change of cells, other than by 

 growth or division, such as by change 

 of cell-contents (Kuster); Metar'abin 

 (ixera, with, beyond, sharing with ; 

 •+- Arabin), a substance present in 

 8ome varieties of gum arable, possilily 

 identical with the " Pectose " of 

 sugar beet ; Met'asperm {(nripfia, 

 seed), (T) a spomphyte in which the 

 egg-organ is aborted, and no purely 

 vegetative cells are to be found in 

 either male or female plants ; (2) a 

 synonym for Angiosperms ; (3) ap- 

 plied by Boulger for the large-celled 

 secondary pro thallium in SclagivcUa^ 

 the secondary endosperm in Gymno- 

 sperms, and the endosperm, oiiginally 

 so-called, fonned after fertilization 

 by the division of the secondary 

 nucleus of the embryo-sac ih Angio- 

 sperms ; metasper'mic, metasper'm- 

 0U8, angiospermous ; Metaspor'o- 

 phyte, C. MacMillan's expression for 

 a Cryptogam of the highest special- 

 ization, as Selaginclla. 



Metas'tasis [fx^rdcTacns, a removing), 

 (1) the sum of the changes under- 

 gone by the products of assimilation 

 in the cells ; metabolism ; (2) the 

 shifting of an organ to some unusual 

 position (Moquin-Taiidoii). 



Metasynde'sis {avvliwcns, a binding 

 together), when the chromosomes are 

 paired end to end ; Telosvnapsis, 



metaton'ic (m^^o, with ; t6vos, a 



strain), used of a stimulus which 

 reverses action" ; metatop'ic (toVos, a 

 place), refers to imbricate bud-cover- 

 ing which has departed from the 

 course of the normal genetic spiral, 

 by secondary development (Pax) ; 

 metatrach'eal (Tpax€«"«, the wind- 

 pipe), applied to wood-parenchyma 

 when forming tangential bands 

 (Solereder) ; metatroph'ic {rpo^^, 

 food), applied to bacteria restricted 

 to substances fabricated by higher 

 organisms (Jones) ; Metatroph'isia, 

 the correlated catabolism of the re- 

 serves and anabolism of the living 

 tissues (Hartog) ; Met'atrophs, ap- 

 plied to saprophytic Fungi, those 

 which feed upon decaying matter ; 

 Met'atype (ti/tt&s, a type), a speci- 

 men from the original locality, 

 recognized as authentic by the 

 describer himself. 



Metax'in [ix^ra^v, between), a protcid, 

 the material of the fibrils of 

 plastids. 



Metaxylem (Mera, beyond ; + Xylem), 

 tlie central wood as distinguished 

 from the peripheral xylem-strands 

 (Scott). 



meteoric (Mod. /werewpos, in mid air), 

 applied to flowers whose expansion 

 depends upon the weather, 



metis'toid (jtiexa, = sharing ; [(ttos, a 

 wel) ; eiZos, like), com])Osed of differ- 

 entiated cells, each cell being de- 

 pendent on the other cells of the 

 organism (Hartog). 



metoe'cious (M^ra, beyond ; oIkos, 

 house), existing on different hosts, 

 heteroecio\is ; Met'onym {6vv/xa, 

 name), a name rejected because an 

 older valid name was based on 

 another species of the same genus 

 (0. F. Cook) ; metox'enous (|<Voy, a 

 host), the same as metoeciou.s. 



Metrogonid'ium {/x-fir-np, mother; + 

 Conidium) = Hetekocvst. 



Mette'nian Glandi, organs peculiar to 

 Plumbagineae which secrete mucilage 

 and sometimes chalk. 



Me'tuloids {iiidnla, a small })yramid ; 

 (Uos, like), modified cystidia, en- 

 crusted with lime, which project 



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