Hydrome 



hygromorphic 



layer between Hadkome and Lep-- 

 TOME: — stele, = -Cvlindek; ~' 

 -Bte'reome or ->^ -strand, a unit of 

 the water vascular tissues (Tansley 

 and Chick) ; Hydromeg'a therm, 

 (;te7o, great ; Ofp^t], heat), Warming's 

 tei ni for a plant which needs mucli 

 heat and moisture, as the natives of 

 nidst tropical regions ; Hydromor- 

 ph'osis, Hydromor'phy {(xSpcpwais, a 

 shaping), structural peculiarities in- 

 duit d by being submerged (Herbst); 

 Hydronas'ty (vao-T^y, pressed), curva- 

 tures produced by changes in fluid 

 relationships in the tissues; adj. hy- 

 dronas'tic; Hy'drone, the simple fun- 

 damental molecule of whicii water is 

 composed ( Armstrong) ; Hydroph'ilae 

 (0tAew, I love), (1) water-pollinated 

 plants ; (2) = Crvptooams; hydro- 

 pVilous {cf>i\4<i}, I love), (1) some 

 aijuatic Phanerogams, and many 

 Cryptogams which need, water in 

 order to b« fertilized ; (2) dwelling 

 in wet land or water (Clements) ; 

 ~ Fun'gi, refers to those Fungi 

 which are allied to Sapro/cjaia ; 

 Hy'drophyll {(px'iWoy, a leaf), the 

 leaf of a iiydropliyte (Clements). 



hydrophylla'ceous, pertaining to Jly- 

 (Irop/ii/lluiii or its allies. 



Hy'drophytes, Hydrophy'ta (u5u>p, 

 water; (pvrhv, a plant), water-]>lants, 

 partially or wholly immersed ; Hy- 

 drophyti'um, a ])lant association of 

 bog and swam]) plants ; hydrophyt'ic, 

 relative to Hydrophytes ; Hydro- 

 phytol'Dgy (Ao><Js, discourse), a 

 treatise on water-plants. 



hydrop'ic {vSpoiriKos, dropsical), Cells, 

 certain enlarged cells in Cyano- 

 phvceae (I'rand). 



Hy'droplast {">5<ap, watf-r; irAaarba, 

 moulded), an apparent vacuole in 

 which aleurone-grains arise ; Hydro- 

 plast'ids, pi., Van Tieghern's term 

 for a[>p.irent va-uoles in the endo- 

 speruj of the seel of Itu'iinis; Hy- 

 drople'on (ttAcji/, full, = a)j agi^regate 

 of molecules, but smaller than a 

 micella), water o*" crystallization ; 

 hydroBtat'ic {(rrariKhs, standing), 

 "completing the succession under 



hydrophytic conditions " (Clements); 

 Hydroste'reids (<rTep€^«, solid), pro- 

 senchymatous thick-walled elements, 

 with conspicuous pits, but without 

 spiral thickening on tlie wails (Fla- 

 berlandt) ; Hydroste'reome, trans- 

 verse, the transverse parenchyma 

 .)f Pudocu r pus aud Ci/ras (I5ernard) ; 

 Hydrotax'is {ri^is, order), creeping 

 from dry to moist situations, as 

 ]>la<modia (Verworn) ; adj. liydro- 

 tact'ic ; Hydrotribi'um {rpi$h, 

 grinding), "bad lands" foimatiou ; 

 hydrotriboph'ilus (^zAeco, I love), 

 dwelling in bad lands; Hydrotribo- 

 phy'ta {(purhu, a plant), bad land 

 plants (Clements) ; Hydrot'rophy 

 {rpocpr], food), unef|ud growth caused 

 by une(iual supply of mo'sture on 

 one side of a part (Wiesner); hydro- 

 trop'ic {Tpoir}}, a turning), (1) un 

 eijual growth dvie to ditVerence in 

 the supply of moisture ; (2) apj)lied 

 to successions whicli become meso- 

 phyti(; (Clements) : Hydrot'ropiam, 

 the phenomena indu('ed by the 

 influence of moisture on growing 

 organs ; pos'itive ~ , turning towards 

 the source of moisture ; neg'ative ^ , 

 turning away from moisture. 



hy'emal, hi/cnm'lL'i (/j/g/zw, winter) -- 

 HI KM A MS, pertaining to winter. 



hygrochas'tic {vyphs, moist ; x°"''Ma^'' 

 I yawn), applied by Ascherson U- 

 tho.se plants in which the bursting 

 of the fruit and dispersion of ^le 

 spores or seeds is caused by ab- 

 sorption of water, as in Aiiasfatiai 

 hinrochuntica, Linn. ; Hygroch'asy, 

 the act in question ; Hy'gro diflfu'- 

 sion, the taking in of moist air by 

 diflusion, and its subseiiuent extru- 

 sion from looser tissue of the leaf 

 (Olnio) ; Hygrodrimi'ura (V"M''J. a 

 co])pice), a iiojiical forest formation 

 (Diels) ; hygromet'ric (;(fT;>oi/, a 

 measure), moving un<ler tiie influence 

 of more or less moisture, hygro3co[)ic; 

 Hygromor'phism {po,>(Pv, shape), (1) 

 form (h'termined by nn>ist surround- 

 ings ; (2) the state of little water 

 absorj)tion aud erjually little evapo- 

 ration (Drude) ; adj. hygromor'phic; 



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