INDEX AND GLOSSARY 



565 



Linen, fibres of, 145. 



Linin, anastomosing threads in the 

 nucleus which bear the chromatin, 

 464, 466. 



Lipase, the enzyme which decom- 

 poses fats, 112. 



Lodicules, two tumid scales in the 

 flower of Grasses, held to represent 

 two obliquely anterior segments of 

 the perianth; 503 (Fig. 406), 504. 



Lodoicea, protoplasmic continuity in, 

 31 ; storage-cellulose in, 109 (Fig. 

 78) ; floating fruit of, 291. 



Lolium (Rye-grass), 503 (Fig. 406). 



London Pride, 517. 



Loranthus, parasitism of, 188, 189 

 (Fig. 141). 



Lotus corniculatus, 522 (Fig. 431). 



Louse- wort (Pedicularis), root para- 

 sitism of, 189 (Fig. 140). 



Lupin, relation of temperature to 

 growth, 121 (Fig. 84 bis). 



Luzula, 500. 



Lychnis flos-cuculi, 507 (Fig. 412) ; 

 diurna, 508 (Fig. 413). 



Lycopodiales, the Club Mosses, 3 ; 

 316 (Chap. XX.). 



Lycopodium, mycorhiza in, 197 ; 318. 



Mace, the arillus of the Nutmeg, 283. 



Maianthemum, 494. 



Maize, 8 ; stem of, 44 (Figs. 30, 31) ; 

 relation of temperature to growth 

 of, 121 (Fig. 84 bis) ; strut-roots 

 of, 159 (Fig. 121) ; analysis of, 

 547 : origin of, 548. 



Malaxis paludosa, adventitious buds 

 of, 214. 



Male-Fern (Nephrodium), 327-343 ; 

 stock of, 328 (Fig. 267) ; buds in, 

 336 ; sorus of, 337 (Fig. 278). 



Male flower of Coniferae, 307, 308 

 (Fig. 250, 251). 



Male gametes, male sexual cells, 251, 

 265 ; transfer of in Seed Plants, 

 269 (Fig. 213) ; behaviour of in 

 fertilisation of Seed Plants, 270 

 (Fig. 214) ; of Pine, 312 (Fig. 254) ; 

 of Zamia, 315 (Fig. 257), 324 ; loss 

 of motility, 487. 



Malformations, caused by Fungi, 407 



(Fig- 343)- 

 Malic acid, in fertilisation of Ferns, 



344- 

 Malva, pollen-tubes of, 268 (Fig. 



212 b). 



Maple sugar, in sap, 89. 



Marchantiales, structure of, 365. 



Marginal placentation, of ovules 

 inserted on the margins of the 

 carpels, 255. 



Marsh Marigold (Caltha), anther of, 

 245 (Fig. 192) ; pollen sac and 

 pollen of, 246-250 (Figs. 193-197) ; 

 carpels of, 253 (Figs. 199, 200) ; 

 ovules of, 258 (Figs. 206, 207), 509 

 (Fig. 414). 



Marsilia Drummondii, chromosomes 

 of, 348, 350 ; parthenogenesis in, 

 478. 



Marsupium, a nursing sac containing 

 the young sporogonium of certain 

 Liverworts, 366. 



Mechanical construction. Chap, ix., 

 p. 136. 



Mechanical function of woody stem, 

 57 ; shock, stimulus of, 130. 



Mechanical tissues, 138 ; specific, 143 : 

 physical qualities of, 146, 147 ; 

 disposition of, 148 ; in stems, 149 ; 

 in leaves, 154 ; in roots, 158. 



Media for bacterial culture, sterilisa- 

 tion of, 458. 



Median plane, in a floral diagram, 

 the plane including the axis, and 

 the midrib of the bract, 229. 



Medullary rays, plates of paren- 

 chymatous tissue running radially 

 from the cambium, inwards into 

 the wood, and outwards into the 

 bast: 47 (Fig. 33), 48 (Fig. 35), 

 49 (Fig. 36), 51, 52 (Fig. 38), 53 

 (Fig- 39). 



Meesia, sexual organs of, 359 (Fig. 

 302). 



Megasporangium, the female spor- 

 angium containing one or more 

 megaspores. In Flowering Plants 

 it is the ovule : 252, 258 (Figs. 

 206-207). 



INIegaspore where spores are sexually 

 differentiated the female spore. 

 In Seed Plants it is the embryo- 

 sac : 258 (Fig. 206) ; development 

 of, 261, 262 (Fig. 209). 



Meiomery, where the number of parts 

 of one category stands below the 

 fundamental number for the flower, 



234- 

 Meiosis, the process of reduction of 

 chromosomes to the half-number : 

 468 (Figs. 393, 394, B) ; its rela- 

 tion to Mendelian segregation, 475. 



