INDEX 
general structuro, 242-246; man- 
ufacture of food, 252; margin, 
235; mosaic, 241, 241*; parts, 
234; perfoliate, 235, 236*; pri= 
mary and secondary, 234; of 
Corn, 235, 236*; rosette, 241, 
241*; sessile, 235, 235*; sheath, 
235; simple, 237, 237*; special 
forms, 270; stipules, 234, 235; 
transpiration, 260; use of the 
photosynthetic food, 278. 
Legume, 80, 485, 82*, 485%. 
Legumelin, 281. 
Legumes, 156. 
Leguminosae, 58; described, 484. 
Legumin, 281. 
Lemma, 17, 22, 18*, 19*, 22*. 
Lemons, 77, 133. 
Lenticels, 184, 184*, 185* 
Leptosporangiate, 430. 
Lettuce, prickly, 85; Sea, 310, 310*; 
Wild, 495. 
Leucin, 281. 
Leucoplast, 115. 
Leucosin, 281. 
Levulose, 277. 
Lichens, 363; described, 379-382. 
Life Cycle, of Angiosperms, 469*; of 
Ferns, 433*; of Flowering Plants, 
6, 7*; of Marchantia, 412*; of 
Moss, 421*; of Pine, 457*; of 
Wheat Rust, 399*; of Cedar 
Rust, 403*. 
Light, as influencing growth, 220; as 
an ecological factor, 502; as 
related to leaves, 237; as related 
to photosynthesis, 257, 257*; as 
related to transpiration, 263. 
Lignin, 115, 276. 
Ligulate flowers, 253, 24* 
Ligule or rain guard, 235. 
Lilac Mildew, 373. 
Lily, embryo sac, 465*; family, 498. 
Linaceae, 486. 
Linseed oil, 279. 
Lipase, 94. 
Liverworts, 504; described, 406-417. 
Loam, 154. 
577 
Locules, of anther, 41, 41*; of fruit, 
77, 78, 77*, 78*; of ovary, 34, 38*. 
Lodicules, 17, 20, 18*, 19*, 22* 
Longevity of seeds, 67; discussed, 71- 
74, 
Macrocystis, 319, 319*. 
Madder family, 492. 
Magnesium, 157. 
Main roots, 136. 
Malic acid, 285. 
Mallow family, 487. 
Maltase, 285. 
Maltose, 277. 
Manufacture of food, in leaves, 252- 
260; in stems, 169. 
Maple, genus, 292; family, 487. 
Marchantias, 407-415. 
Marchantiales, 407-415. 
Marchantia polymorpha, 407-414. 
Margin, of Icaves, 235. 
Marguerite, 494, 494*. 
Mass culture, 559. 
May Apple, or Mandrake, 180, 180*. 
Meadows, 508. 
Medicago sativa, fruits, 82*. 
Medullary rays, 132, 197, 198*, 201*, 
202*. 
Megaspore, 442, 441*; formation, 463, 
462*; mother cells, 463, 461*, 
462*. 
Megasporangium, 442, 441*. 
Megasporophyll, 442, 441*. 
Megastrobilus, 448*. 
Melon type of fruit, 79, 78*. 
Membrane, of the cell, 114, 115*; of 
the nucleus, 114, 114*; semi- 
permeable, 117. 
Mendel, Gregor, 539, 539*; dis- 
coveries, 541, 542*; experiments, 
540; law of dominance, 543. 
Mendel’s law, 546; usc in plant breed- 
ing, 562; value, 547. 
Mendelian ratio and the combination 
of gametes, 556. 
Mendelism, as demonstrated in Corn, 
548*, 549*, 550*, 551*; as demon- 
strated in Garden Pea, 541-546, 
