Trophoplast 



Tubercle 



granules in protoplasm, cf. Plastid ; 

 Troph'opollen X ( + Pollen), the 

 partition of an anther-loculus or 

 its remains (Lindley) ; Troph'osome 

 (aafia, a body), any organ which is 

 concerned with supplying nourish- 

 ment only ; Troph'ogperm, Tropho- 

 spermfium, Trophosper'murti{av4piJ.a, 

 a seed), = Placenta; Troph'ospore 

 ( + Spore), applied to the spores of 

 Diatoms, Desmids, BulhochaHe and 

 CoZeocAae(?«(Radlkofer);Trophospor'o- 

 some, applied to organs which are 

 engaged in nourishing and also in 

 reproducing the plant (Potonie) ; 

 Trophotax'is {rdp^is, order), Stahl's 

 term for Trophot'ropism [rpoir)], a 

 turning), phenomena induced in a 

 growing organ by the chemical natui-e 

 of its environment; Troph'y, pi. 

 Tropli'ies, Wiesner's term for an 

 unequal lateral growth of tissue or 

 organ, depending on its relation to 

 the horizon and the mother-shoot. 



trop'ic {Tpoir)), a turning), reacting to 

 a stimulus by internal change in an 

 organism (Wager), it may be neg'a- 

 tive, or pos'itive ; trop'ical, trop'icus 

 (Lat., pertaining to a turning), (1) 

 growing within the tropics ; (2) used 

 for flowers Avhich expand in the 

 morning and close at night during 

 several successive days. 



Trop'is (TpStris, the keel of a vessel), in 

 composition used for the keel of a 

 papilionaceous flower, or resembling 

 the same. 



Trop'ism(Tpo7rr7, a turning), a curvature 

 which results from a response to 

 some stimulus; the disposition to 

 respond by turning or bending 

 (Copeland) ; tropis'tic, movement in 

 response to stimulus (Czapek). 



trop'o-, employed as a prefix by Drude, 

 to denote climates alternating be- 

 tween torrential rain and sunny 

 drought ; Tropodrymi'am {Spvfxhs, a 

 coppice), savanna forest formation 

 (Diels) ;tropoph'ilous(</)iA,e'cw, 1 love), 

 loving change of condition as 

 Tkopophytes ; Trop'ophyll {(i>v\\op, 

 a leaf), leaves of shrubs and trees 

 (Potonie) ; Trop'ophyte {(pvrhy, a 



plant), applied to the large majority 

 of plants, which are xerophilous and 

 hygrophilous according to season 

 (A. F. W. Schimper). • 



True-par'asite = Obligate-parasite. 



trul'lifer, truUifor'mis (Lat.), shaped 

 like a bricklayer's trowel. 



Trum'pet-hy'phae, tubes in Laminarieae 

 having swollen portions with trans- 

 verse septa(F. W. Oliver); trum'pet- 

 shaped, tubular, with dilated orifice. 



trun'cate, incnco/tus (Lat., sliortened), 

 as though cut off at the end. 



Tnm'cus (Lat., tree-stem), (1) the 

 main-stem or Trunk of a tree ; (2) 

 in Lichens, the thallus. 



Truss, a florist's term for a flower- 

 cluster. 



Try'ma {rpv/xa, a hole or opening), 

 Necker's term for a drupaceous nut 

 with dehiscent exocaip, as the 

 walnut. 



Tryp'sin {dpvirTcc, I break in pieces), 

 a group of proteolytic enzymes ana- 

 logous to the pancreatic ferraenj; in 

 animals, such as Bromelin and 

 Papain ; Trypt'ases, pi. , enzymes of 

 the trypsin group (Vines) ; trypt'ic, 

 relating to Trypsin, or a similar 

 enzyme. 



tubaeform'is {tuba, a trumpet ; forma, 

 shape), trumpet- shaped ; tuba'tus 

 (Mod. Lat.) is a synonym. 



Tube, Tu'bics (Lat., a pipe), (1) any 

 hollow elongated body or part of 

 an organ ; (2) the united portion 

 of a gamopetalous corolla or gamo- 

 sepalous calyx, etc. ; '^ -cell, the cell 

 which gives rise to the pollen-tube ; 

 ^ Germina''tion, the germination of 

 a spore in which the first product is 

 a germ -tube; tube -form, tube- 

 shaped, tubular or trumpet-shaped 

 (Crozier) ; Tubes, prothairine = Em- 

 bryo-sac Tubes. 

 Tu'ber (Lat., a tumour), a thickened 

 and short subterranean branch, be- 

 set with buds or "eyes"; Tu'ber- 

 cle, Tuher'cuhim (Lat.), (1) a little 

 tul)er ; (2) a wart-like apothecium 

 in Verrucaria ; (3) any similar ex- 

 crescence, as on roots, ascribed to 

 the action of symbiotic organisms ; 



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