Metaplasm 



A DICTIONARY 



Microzobgonidium 



the segments to form the 

 daughter-stars. 



MflT'APLASM, a name given by 

 Hanstein'to that part of the 

 protoplasm which holds the 

 formative material. Used by 

 some synonymously with Deu- 

 toplasm . 



METASPER'MOTJS, see Angio- 



8PERMOUS. 



METAs'tAsIs, see Metabolism. 



METEdR'lC, applied to flowers 

 whose opening or closing is 

 influenced by the weather. 



METCE'glOUS, see Heteiue- 

 ciotjs. 



METOE'QfSM, see Hetercecism. 



METOX'ENOtfS, see Heterce- 

 cious. 



MlA§MAT'IC, pertaining to in- 

 fectious organisms floating in 

 the atmosphere. See Infec- 

 tion. 



MICEL'lA (pi. Mi?el lse), a term 

 proposed by Nageli for certain 

 structural particles which serve 

 for the building up of all plant 

 and animal tissues. They are 

 considered to be aggregations 

 of molecules which, like crys- 

 tals, are able to increase or 

 diminish in size without chem- 

 ical change. 



MICRAn'DBE, see Dwarf-male. 



MICROBE, a micro-organism, 

 animal or vegetable. In use 

 restricted chiefly to plants, es- 

 pecially the Schizomycetes, 

 or bacteria and their allies. 

 See Microphyte. 



MI'CRO§YST, a resting state of 

 certain swarm-cells in Myxo- 

 mycetes. 



MlCROGONlD'JtfM (pi. Microgo- 

 nid'Ia), applied to gonidia of 

 smaller size than others pro- 

 duced by the same species; — 

 they are usually male gonidia, 

 as the so-called androspores of 



(Edogonium. In pteridophytes 

 and their allies they are usu- 

 ally called microspores. See 

 Microspore. 



MICRGG'RAPHY, the description 

 or study of microscopic objects; 

 micrology. 



MICROPHYL'LOu'S, having small 

 leaves. 



MICROPHYTE, any plant, such 

 as the bacteria and smaller 

 species of fungi, which can 

 be clearly seen only by means 

 of a microscope. 



Ml'CROPYLE, the nearly closed 

 foramen as it exists in the 

 ripened seed. 



MICROSO'MA (pi. MIeroso'mata), 

 a name proposed by Strasbur- 

 ger for a class of granules in 

 the protoplasm which have a 

 high degree of refringency and 

 are deeply stained by ba;ma- 

 toxylin. 



MICROSPORAN'GIUM (pi. Mlcro- 

 sporan'gia), a sporangium con- 

 taining microspores. 



MICROSPORE, a small male 

 spore, as in Rhizocarpae, Sela- 



finellae, and Isoetse. See 

 Iicrogonidium. Compare 

 Macrospore. 



Ml'CROSTOME, a small mouth or 

 orifice. 



MICROSTY LOtfS, applied to that 

 form in heterostyled plants in 

 which the flowers have short 

 styles and long filaments. The 

 expressions " long - styled," 

 "medium- or mid-styled," 

 and "short-styled" are pref- 

 erable to Macrostylous, Meso- 

 stylous, and Microstylous, and 

 are more frequently used. 



MtCROZOOGONlD'lu-M, a motile 

 microgonidium, as in Ulothrix, 

 differing from a macrozo5go- 

 nidium in size and in having 

 the power of conjugation. 



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