Trama 



Trampirometer 



Tra'ma (Lat. , weft), a mass of liypliae 

 in the lamellae uf some Fungi, from 

 which the hymeniura springs ; Fayed 

 subdivides it thus : ~ contez'ta, 

 the hyphae usually parallel, or 

 slightly oblique ; '- inver'sa, when 

 they are derived from the sub- 

 hyineniuni ; --' permix'ta, when 

 without apparent order. 



transa'pical {trans, across or beyond, 

 + ai'Ical), used by 0. Mueller for 

 '*' Ax'is, at right angles to the 

 apical axis, passing through the 

 centre of the pervalvar (main longi- 

 tudinal) axis of a Diatom ; --' Plane, 

 the plane at right angles to both 

 valvar and apical planes, passing 

 through the porvalvar and trans- 

 apical axis (0. Mueller) ; Trans'ect 

 " a cross-section of vegetation " 

 (Clements) ; belt ~ , a band varying 

 in width from a decimetre (= nearly 

 four inches) to a meter ; line '~ , an 

 enumeration of species found in a 

 direct line between two points ; 

 Transec'tion {sedio, a cutting), a 

 term proposed by C, MacMillan for 

 "transverse section." 



Trans'fer {transfero, I bring over), of 

 water, the passage of water by ducts 

 or cells. 



Transformation {transformatio, a 

 change of shape), (1) metamor- 

 phosis ; (2) morphologic changes 

 in an organ during its existence ; 

 adj . transformed' ; as -' Branch, 

 may be a tendril, thorn, or similarly 

 changed organ ; -^ Cell, the linal 

 shape of the cell, as a fibre, tracheid, 

 etc. 



Transfu'sion {transfasio, a pouring 

 out) ; Tis'sue, the network of 

 tracheidal cells accompanying the 

 vascular bundle in the leaves of 

 conifers of two kinds : («) unpitted, 

 with abundant protoplasmic con- 

 tents ; or {b) tracheidal cells, with 

 similar contents ; '-■ Strand, consist- 

 ing of parenchymatous or slightly 

 thickened cells at the junction of 

 phloem and xylem bundle elements, 

 when a ring of sclerenchyma is 

 formed . 



Trausit'ion {transit to, a passing over), 

 the area where change takes place ; 

 '-' Cells, cells which are continua- 

 tions of sieve-tubes, the longitudinal 

 division into sieve-tubes and com- 

 panion cells stops, and Transit'ion- 

 tissue is formed ; Lev'el of -^ ; in 

 seedlings where the root and stem 

 systems meet; high --', much of 

 the hypocotyl structure hardly dis- 

 tinguishable from the root ; inter- 

 me'diate ~, in the region of the 

 collet up to the hypocotyl ; low — , 

 begins below the collet and is com- 

 plete in that region (Compton) ; 

 transitor'ius (Lat., adapted for 

 passing through), temporary, soon 

 passing away (S. F. Gray) ; transi- 

 tory, applied to starch formed of 

 other carbohydrates and not from 

 assimilation direct ; the grains are 

 usually small. 



Transla'tor (Lat., a transferrer), em- 

 ployed for the Retinaculum of 

 Asclepiads. 



Transloca'tion {trans, across ; locatlo, a 

 placing), the transference of reserve 

 material from one part to another. 



Transmis'sion {transviissio, a sending 

 across), used for the conveyance of 

 stimulus as in Drosera and Mimosa 

 pndim, Linn., other leaves acting in 

 sympathy ; --Cells = Tkansfu.sion- 



TISSUE. 



Transmuta'tion {traiismuto, I shift), 

 chemical change by addition or 

 alteration of composition without 

 complete resolution into its elements; 



^ of Host, = Lll'OXENY. 



Transovula'tae {trans, across, -f- 

 Ovulum), Van Ticghem's term for 

 Phanerogams furnished with transi- 

 tory ovules ; Transpira'tion {s/nratio, 

 a breathing), the exhalation of 

 watery vapour from the stotnata 

 of plants, not more evaporation ; 

 cutic'ular <-, the small amount 

 passed through the cuticle (Brown 

 and Escoml^e) ; sto'matal ~, the 

 normal and chief nieajis of tran- 

 s])iring; Transpirom'eter (fxirpov, a 

 measure), a})panitus lor measuring 

 the amount of transpiration. 



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