Leuclte 



Light-absorption 



" Amidocaproic acid" is a white 

 substance, first found in animals, 

 afterwards found in plants ; Leu'- 

 cite, Van Tieghem's name for 

 LEUCOPLAST ; he further modifies 

 the term by prefixing amylo-, 

 chloro-, chromo-, elaio-, oxali-, 

 for various modifications ; further- 

 more, active <~, or pas'sive or 

 reserve' ~ , according to function ; 

 Leu'coplast, Leucoplas'tid (TrXao-ros 

 moulded), A. F. W. Schimper's 

 term for the specialised colourless 

 protoplasmic granule ; syn. ANA- 

 PLAST (A. Meyer), and LEUCITE (Van 

 Tieghem) ; leucophyl'lus (<pv\\oi>, a 

 leaf), white - leaved ; Leu'cophyll- 

 grain = LEUCOPLAST ; Leu'cosomes 

 (ffwfj.0., a body), small spherical 

 bodies, apparently composed of al- 

 buminoids inclosed in the leuco- 

 plasts of Commelynaceae (Zimmer- 

 mann). 



leviga'tus (Lat.) smooth, slippery ; 

 in botanical Latin it is usually 

 spelled " laevigatus." 



le'vis (Lat.) smooth, in the sense of 

 not rough ; from the time of 

 Linnaeus downward this has been 

 spelled botanically as "laevis." 



Le'vulose (laevus, on the left side)=; 

 Fructose or fruit-sugar ; it deflects 

 polarised light to the left. 



Lia'na, Lia'ne (Span, liar, to tie), pr. 

 leah-na, le-ahn ; luxuriant woody 

 climbers in the tropics with stems 

 of anomalous structure ; lia'noid 

 (elSos, like), having a liana-like 

 habit. 



Li'ber (Lat. inner bark), the inner 

 bark, which is often fibrous, the 

 phloem of the vascular system con- 

 taining the bast-tissue ; <~ Fi'bres, 

 bast-fibres. 



li'ber (Lat. free), having no cohesion 

 with the adjoining parts ; libera'tus 

 (Lat.), freed. 



liberolig'neous (liber, inner bark, 

 liynum, wood), applied to a con- 

 joint bundle composed of bast and 

 wood elements ; lib'riform (forma, 

 shape) Cell, a narrow, thick- 

 walled cell of woody tissue re- 



sembling bast, wood-fibre (Crozier) ; 

 ~ Fi'bres, substitute fibres reduced 

 in form (Germ., Ersatzfasern). 



Li'chen (AaxV, lichen), a Cryptogam 

 which forms a thallus which is 

 either shrubby, leafy, crustaceous 

 or powdery, generally regarded as a 

 symbiosis of hyphal filaments with 

 algal gonidia ; ~ Al'gae, the gonidia 

 or green bodies in the thallus ; 

 Fun'gi, the filaments of hyphae, 

 which are usually interwoven with 

 the gonidia ; ~ Starch - LICHENIN ; 

 Li'chenin, the peculiar starch-like 

 body in Cetraria islandica, Linn., 

 and other Lichens ; Li'chenism, 

 the special symbiosis between alga 

 and fungus occurring in Lichens ; 

 li'chenoid (et<5os, like), irregularly 

 lobed, as Lichens ; Lichenog'rapher, 

 Lichenog'raphist (vpd<j>w, I write) = 

 Lichenologist ; Licnenog'raphy, the 

 study of Lichens; adj. licheno- 

 graph'ic ; Lichenol'ogist (\&yos, dis- 

 course), a student or writer on 

 Lichens ; Lichnoe'r'ythrine (tpvdpos, 

 red), Sorby's name for the red 

 colouring matter of Lichens ; Lich- 

 noxan'thine (a.v8bs, yellow), the 

 same observer's term for the yellow 

 colouring in Lichens. 



Lid (1) the operciilum of moss-capsules 

 (Hooker) ; (2) the distal extremity 

 of the ascidium of Nepenthes which 

 forms a lid-like appendage to the 

 pitcher ; (3) the areas of pollen- 

 grains which are detached to per- 

 mit the pollen-tubes to pass ; ~ 

 Cells, the terminal cells of the neck 

 of the archegonium which tem- 

 porarily close the canal ; the stig- 

 matic cells. 



Life, the state in which plants can 

 grow or perform their functions of 

 absorption, assimilation, reproduc- 

 tion, etc. ; ~ Cy'cle, the course of 

 development from any given stage 

 to the same again, as from the seed 

 to the seed once more. 



Ligamen'tum J (Lat., a band or band- 

 age) = RAPHE. 



Light-absor'ption, the ratio of the 

 whole of daylight to that of the 



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