Ligamentum 



Lim« 



Ligamen'tum + (Lat, a band or band- 

 age) = Rapiie. 



Light-absor'ption, the ratio of the 

 wliole of daylight to that of the place 

 in which the plant grows (Wiesner) ; 

 -^ -traps = Lens-cells. 



lig'neous, lig'nous, lii/neus (Lat.), 

 woody. 



lignic'olor {lignwn, wood; color, col- 

 our), tawny, the colour of freshly 

 cut wood ; lig'nicoie, lignic'olous 

 (colo, to inhabit), applied to plants 

 which live on timber ; lignif' erous 

 ifcro, I bear), used ot branches 

 which form Avood only but no 

 flowers ; Lignilica'tion {facio, I 

 make), the hardening or thicken- 

 ing of the cell-wall by secondary 

 deposits; lig'nified, converted into 

 wood ; '-' -lay'er, in leaf- fall, the 

 layer of cells immediately above 

 the separation layer; lig'niform 

 (forma, shape), like wood ; lig'nify, 

 to turn into wood ; Lig'nin or Lig'- 

 nine, an incrusting or impregnating 

 sul)stance on the cell-wall, produc- 

 ing 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 ; Lignire'cse 

 (deriv. ?), Payen's term for a con- 

 stituent of Lignin, only slightly 

 soluble in water ; Lig'nite, a fossil 

 or semi-1'ussil wood substance ; jet is 

 an example; Lignoceriulose ( + 

 Celm'losr), 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'no-suberi- 

 zation (+ »Suj5i:uization) ; in leaf- 

 fall when the lignification and the 

 protective layer is completed by a 

 layer of suberine, and the disap- 

 pearance of the protoplasm from the 

 cells (Lee) : Ligno'sum, a type of 

 vegetation in Avhicli there are several 

 layers, conditioned by the dominant 



trees or shrubs; Lig'num, wood, 

 that wuthin 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 (X. E. Bz'own) ; 

 (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 Sclaginella ; 

 (5) an appendage to certain petals, 

 as those of SSileiic and Cuscuta 

 (A. Gray); (6) the ovuliferous scale 

 in Araucaria, united with the bract, 

 and resembling the ligule in Isovtes 

 (Potter); (7) the envelope which 

 ])rotects tlie young leaf in palms, as 

 Chamaerops and llhaphis. 



lig'ular, (1) jjcrtaining to a ligule, in 

 its various meanings ; (2) Russow's 

 term for that leaf-face of Selaginella 

 which is turned towards the ligule ; 

 cf. ALiGULAK ; lig'uiate, ligula'tus, 

 furnished with a Ligule ; lig'aliform, 

 ligulifoi'm'is [forma, shape), strap- 

 shaped; iigulillor'ate, liguliflor'ous, 

 -rus {flos, Jioris, a flower), having 

 ligulate florets, as Hieraciiun. 



lilac, pale Avarni pur[»le, the colour of 

 i\i&^o\\QVoi Syriaga vulgaris, Linn. ; 

 Li'lacine, a bitter principle from the 

 bark of the same plant; li'lacine 

 (Heinig), lila'ceus (Mod. Lat.), 

 lilaci'nous, -nus, lilac in colour. 



lilia'ceous, -ceas {lilium, a lily ; -4- 

 ACEors), lily-like. 



limaciform'is {Umax, linuicis, a slug ; 

 foriiia, shape), applied by Koerber 

 to those Lichen spores v>hich arc 

 slug- shaped. 



Limb, Urn' bits (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 ; 

 (3) the margin of the leaf in Mosses 

 wlien distinct in colour and cell- 

 structure ; lim'bate, limba'tia^, hav- 

 ing a margin of the kind stated. 



Lime, used to denote calcium carbonate 



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