leucite 



Life 



m» 



to function : leiicophyirus 

 i<pv\\ov, a leaf), white- leaved ; 

 Leu'cophyll-gTain = Leucoplast ; 

 Leu'coplast, Leucoplas'tid (TrAacrrbs, 

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

 for the specialized colourless proto- 

 plasmic granule; syn. Anaplast (A. 

 Meyer), and Leucite (Van Tieghera); 

 Leucoso'mata, pi. = leu'cosomes 

 (<rwyua, a body), small spherical 

 bodies, apparently composed of 

 albiiminoids inclosed in the leiico- 

 plasts of Commelynaceae (Zimmer- 

 mann). 



leviga'tus (Lat.), smooth, slippery; 

 in botanical Latin it is usually 

 spelled ' ' lae-sagatus. " 



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

 not rough ; from the time of Linnaeus 

 downward this has been spelled bo- 

 tanically as "laevis." 



Le'vulose {laevus, on the left side) ; 

 Fructose or fruit-sugar ; it detiects 

 polarized light to the left. 



Lia'na, Lia'ne (Span, liar, to tie ; 

 pron. leah-na, le-ahn), luxuriant 

 woody climbers in the tropics with 

 stems of anomalous structure ; 

 lia'noid {eUos, like), having a liana- 

 like habit ; Lia'noid, Johow's term 

 for phanerogamous parasites which 

 proceed from autotrophous climbers. 



Lib'er (Lat., inner bark), the inner 

 bark, v/hich 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 {lihe}-, inner bark ; 

 lignum, wood), applied to a conjoint 

 bundle composed of bast and wood 

 elements ; Lib'riform {forma, shape), 

 a tissue coniposed of librifoum 

 cells (Tschirch) ; lib'riform Cell, a 

 narrow, thick- walled cell of woody 

 tissue resembling bast, Avood-fibre 

 (Crozier) ; ^ Fi'bres, substitute 

 fibres reduced in form (Germ., 

 Ersatzfasern). 



Li'broplasts {liber, free ; nXafXThs, 

 moulded), elaeoplasts which are free 



21 



on the median line of Diatoms 

 (Mereschkowsky). 



Li'chen (AetxV> lichen), a Cryptogam 

 which forms a thallus that 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; 

 ■^ Tun'dra, Hat or gently undulat- 

 ing land, chiefly producing Lichens, 

 especially in the north of Siberia; 

 lichenic'olous {coIo, I inha1)it), dwell- 

 ing in or on a Lichen ; Li'chenin, 

 the peculiar starch -like body in 

 Cdraria islandica, Linn., and other 

 Lichens ; Li'chenism, the special 

 symbiosis between Alga and Fungus 

 occurring in Lichens ; Licheno- 

 g'rapher, Lichenog'raphist {ypd(pa>, 

 I write) = Lichenologist ; Lioheno- 

 g'raphy, the study of Lichens ; adj. 

 lichenograph'ic ; li'chenoid {eUos, 

 like), irregularly lobed, as Lichens ; 

 Lichenorogist {\6yos, discourse), 

 a student or writer on Lichens ; 

 Lichenol'ogy {\6yo5, discourse), the 

 science and study of Lichens ; Lich- 

 noer'ythrine {epvOphs, red), Sorby's 

 name for the red colouring matter 

 of Lichens ; Lichnoxan'thine {^aydhsy 

 yellow), the same observer's term for 

 the yellow colouring in Lichens. 



Lid, (1) the operculum of moss-capsules 

 (W. J. Hooker) ; (2) the distal e.x- 

 tremity of the ascidium of Nepenthes 

 which forms a lid-like appendage to 

 tlie pitcher ; (3) the areas of pollen- 

 grains which are detached to permit 

 the poUen-tnbos to pass; '~ Cells, 

 the terminal cells of the neck of the 

 archegonium which temporarily close 

 the canal ; the stigmatic cells. 



Life, the state in which "plants can 

 grow or perform their functions of 

 absorption, assimilation, reproduc- 

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

 development from any given stage 

 to the same again, as from the seed 

 to the seed once more. 



