ligneous 



Line 



place in which the plant grows 

 (Wiesner). 



lig'neous, lig'nous, lig'neus (Lai), 

 woody. 



lignic'olor (lignum, wood, color, 

 colour), tawny, the colour of 

 freshly cut wood ; lignlc'olous 

 (colo, to inhabit), applied to plants 

 which live on timber ; lignif erous 

 (fero, I bear), used of branches 

 which form wood only, but no 

 flowers ; Ligniflca'tion (facio, I 

 make), the hardening or thicken- 

 ing of the cell-wall by secondary 

 deposits ; lig'nified, converted into 

 wood;lig'niform(/orwia, shape), like 

 wood ; lig'nify, to turn into wood ; 

 Lig'nin or Lig'nine, an incrusting or 

 impregnating substance on the cell- 

 wall, producing woody tissue ; it is 

 insoluble in water or ether, soluble 

 in alcohol and alkalis, and is the 

 remainder after the cellulose has 

 been removed by chemical means ; 

 Ligni'reose (deriv.?), Payen's term 

 for a constituent of Lignin, only 

 slightly soluble in water ; Lig'nite, 

 a fossil or semi-fossil woody sub- 

 stance ; jet is an example; Lig- 

 nocel'lulose (+ Cellulose), see 

 CELLULOSE ; Lig'none, a substance 

 which differs from Lignin by being 

 insoluble in water, alcohol and 

 ether, but soluble in ammonia, 

 potash, soda (Payen) ; Lig'nose, a 

 constituent of Lignin, but soluble 

 only in potash and soda solutions 

 (Payen) ; lig'nose, ligno'sus, woody, 

 ligneous; Lig'num, wood, that 

 within the cortex, including both 

 alburnum and duramen. 



Lig'ule, Lig'ula (Lat. , a little tongue); 

 (1) a strap- shaped body, such as 

 the limb of the ray florets in Com- 

 positae; (2) a lobe of the outer 

 corona in Stapelia (N. E. Brown) ; 

 (3) the thin, scarious projection 

 from the top of the leaf sheath in 

 grasses ; (4) a narrow membranous, 

 acuminate structure, internal to 

 the leaf-base in Isoetes and Selagin- 

 ella ; (5) an appendage to certain 

 petals, as those of Silene and Cuscuta 



(A. Gray) ; lig'ular, Russow's term 

 for that leaf-face of Selaginella 

 which is turned towards the ligule ; 

 cf. ALIGULAB; lig'ulate, ligula'tus, 

 furnished with a Ligule; ligu'liform, 

 liguliform'is (forma, shape), strap- 

 shaped ; ligulinor'ate, liguliflor'ous, 

 rus (flos, floris, a flower), having 

 ligulate florets, as Hieracium. 



li'lac, pale warm purple, the colour 

 of the flower of Syringa, wdgaris, 

 Linn. ; Li'lacine, a bitter principle 

 from the bark of the same plant ; 

 lila'ceus, lilaci'nous, -nus, lilac in 

 colour. 



lilia'ceous, -ceus (lilium, a lily + 

 aceous), lily-like. 



limaciform'is (Umax, limacis, a slug, 

 forma, shape), applied by Koerber 

 to those Lichen spores which are 

 slug-shaped. 



Limb, limb'ua (Lat., a border or hem) ; 

 (1) the border or expanded part of 

 a gamopetalous corolla, as distinct 

 from the tube or throat; (2) the 

 lamina of a leaf or of a petal ; 

 lim'bate, limba'tus, bordered, as 

 with another colour. 



Lime, used for calcium carbonate in 

 plants ; ~ Gran'ules, lime-knots in 

 Myxogastres, concretions occur- 

 ring in the capillitium ; ~ Scales, 

 the chalk - glands which excrete 

 lime, as with certain Saxifrages. 



Li'mes (Lat. , a cross-path or boundary) 

 commu'nis $ the collum or neck of 

 a plant; limitary, placed at the 

 limit, as a guard ; limiting Cell = 

 HETEROCYST. 



limnetic (\ipvrj, a pool), applied to 

 plants which grow in pools or their 

 neighbourhood. 



limo'nius (Mod. Lat.), lemon like, as 

 to colour ; citrinus. 



Line, Li'nea (Lat., a line or thread), 

 as a measure of length, the twelfth 

 part of an inch, in mi lie met res, 

 2*1167; the Paris line is mm. 

 2 '325; Li'nea transversa'lis, the 

 ostiolnm of some Fungi ; Lines of 

 Growth, the limits of each year's 

 growth in woody stems ; ~ of 

 Vegeta'tion, for any given species, 



147 



