Laurilignosa 



lecotropal 



woody), woods with dominance of 

 evergreen, mostly glabrous bright 

 gi-een leaves ; in moist subtropics ; 

 Lauri'on, an association of laurels ; 

 Laurisil'vae, pi. {silva, a wood), 

 the knysna forest of South Africa; 

 Lau'rin, an acrid principle from the 

 berries of Laurus iwlilis (Linn. ). 



lav'ender, pale bluish grey ; the colour 

 of the flowers of Lavandula vera, 

 DC. 



lax, lax' us (Lat.), loose, distant. 



Lay'er, (1) the stroma or receptacle of 

 Fungi ; (2) in propagation, a branch 

 caused to root whilst still connected 

 with the parent ; (3) different strata 

 of growth, as trees above a lower 

 stratum of shrubs and again of herb- 

 aceous plants ; ab'soiss '*- , usually 

 corky tissue cutting off the leaf from 

 the branch ; lig^'nified --' , at the base 

 of the leaf before leaf- fall ; proteo'- 

 tive -^j partly suberized ; Separa'- 

 tion -', the absciss layer in leaf- fall; 

 Lay'erage, term proposed by L. H. 

 Bailey for propagation by layering, 

 or the state of being so multiplied ; 

 Lay'ering, the art of making layers ; 

 Lay'ing, a gardener's term for the 

 preceding. 



lazuli'nus (Mod. Lat.), ultramarine 

 blue, a pigment obtained from 

 "Lapis Lazuli." 



leach'y, losing material by percolation, 

 as rain washing awav nutriment 

 through the soil ; Leach ing, is the 

 action itself. 



lead-coroured, dull gi-ey ; cf. plumbeus. 



Lea'der, the primary or terminal shoot 

 of a tree. 



Leaf, the principal appendage or lateral 

 organ borne by the stem or axis ; it 

 is a sim'ple -^ when undivided, com'- 

 pound -^ when divided into distinct 

 parts ; ~ Arrang'ement, see Phyl- 

 LOTAxis ; /- Blade = Lamina ; 

 -^ Blis'ter, disease of pear-leaves due 

 to Taphrina bullata ; ~ Blotch, 

 black patches on sycamore leaves 

 caused by JRhytisma acerinum ; ^ 

 Bud, a bud which develops into 

 a leafy branch ; opposed to 



a 



" Flower Bud " ; 



Cast, pine- 



leaves diseased by Lophodermium 

 Pinastri ; -^ Curl, disease due to 

 attack of Exoascus on peach leaves ; 

 Cy'cle, in phyllotaxis, a spiral which 

 passes through the insertions of in- 

 termediate leaves till it attains the 

 next leaf exactly above its starting 

 point ; '- Fall, defoliation ; ^^ 

 Green = Chlorophyll ; ^ Pores = 

 Stomata ; '^ Scar, the mark or 

 cicatrix left by the articulation and 

 fall of a leaf; '-"Scorch, fungus attacks 

 on leaves of various plants, appear- 

 ing as if scorched ; ~ Sheath, the 

 lower part of the petiole which more 

 or less invests the stem ; <^ Spot, 

 diseased portions due to fungus at- 

 tacks on the leaves of many species ; 

 <-< Stalk = Petiole ; -^ Ten'dril, 

 one which is a transformed leaf; ~' 

 Trace, all the common bundles in a 

 stem iDelonging to one leaf. 



Leafing, the unfolding of leaves; 

 Leaf'it, Withering's term for Leaf- 

 let ; leafless, wanting leaves ; 

 Leaflet, the blade or separate divi- 

 sion of a compound leaf ; leaf like 

 = foliaceous ; leafy, full of 

 leaves. 



leath'er-yeriow, a vague term for the 

 tint of tan or bulf leather ; alu- 

 taceous. 



leath'ery, tough, coriaceous. 



Leaves, pi., Pock'et -^ or Man'tle ^, 

 specialized leaves which accumulate 

 humus, as Asplenium Nidus, etc. 



lecanor'ine, resembling the apothe- 

 ciuni of the genus Lecanora, which 

 has a paler margin arising from the 

 thallus. 



lecid'eifprm {forma, shape), lecid'eine, 

 like the apothecium of Lecidca, 

 which has a margin of the same 

 colour as the disc ; lecid'ioid [ei^os, 

 resemblance), lecideiform. 



Le'cithin {K-f]icv9os, an oil-flask), a type 

 of white, waxy, phosphorus-con- 

 taining substances, some of which 

 have been separated from the seeds 

 of maize, peas and wheat. 



lecof ropal {\4kos, a dish : rpoir^, a 

 turning), shaped like a horse-shoe, 

 as some ovules, cf. lyootkopous. 



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