486 



INDEX 



Leaf glands, 81-85. 



Leaf hairs, 81-85. 



Leaf, parts of, 51, 70, 71. 



Leaf patterns, 81. 



Leaf reduction by desert plants, 449. 



Leaves, fall of, 75. 



Leaves, form of, 70-82. 



Leaves, modification of, 86-89, 449. 



Leaves, movement, 77-82. 



Leaves, relation to light, 77-81. 



Leaves, respiration of, in. 



Leaves, structure of, 83-86. 



Leaves, venation, 71, 72. 



Leaves, work of, 90-116. 



Ledum, 415. 



Legume, 152, 191, 409. 



Leguminosae, 152, 409. 



Lemanea, 241, 242. 



Lemons, 412. 



Len tides, 63, in. 



Lepidodendron, 354, 355. 



Leptomitus lacteus, 256. 



Lettuce, 419. 



Leucoplast, 86. 



Lianafe, 41. 



Lichens, 270-275; use of, 275. 



Lichens in soil building, 273. 



Lichens, structure, 274. 



Life cycle, 218, 219, 259, 290, 325, 



342, 356, 374, 391- 

 Life factors, 424. 

 Life history of Angiosperms, 380; 



formula for, 389. 

 of G 

 mula, 374. 



Life history of Gymnosperms, for- 



Life history of heterosporous pterido- 



phytes, formula, 356. 

 Life history of mosses, 326. 

 Life history of wheat rust, 289; life 



cycle of, 290. 

 Light, 422. 



Light, importance of, 78, 97-105. 

 Ligule of corn leaf, 51, 71. 

 Ligustrum, 416. 



Lilac, 416; buds and shoots, 65. 

 Lilac mildew, 263, 264. 

 Liliaceae, 400. 

 Liliales, 166. 

 Lilium. harrisii, 166. 

 Lilium longiflorum, 166. 

 Lily bulb, 44. 

 Lily family, 400. 

 Linaceae, 410. 

 Linaria linaria, 148. 



Linaria vulgaris, 148, 1-49. 

 Linden family, 413. 

 Linun usitatissimum, 410. 

 Lipase, 135. 

 Liverleaf, 304. 



Liverworts, 304-315, 325, 326. 

 Loblolly bay, 415. 

 Locule, of anther, 143. 

 Locust, 410. 



Lycopersicum esculentum, 416. 

 Lycopodineae, 210, 346. 

 Lycopodium, 346. 

 Lycopodium cernuum, 347. 

 Lycopodium lucidulum, 199, 346, 

 347- 



Macrocystis, 236. 



Macrosporangia of pine, 361, 362; 



of angiosperms, 379. 

 Macrosporangium of Cycas, 368; of 



Zamia, 369. 

 Macrospore, 348, 382. 

 Madder family, 418. 

 Madders, 418. 

 Magnesium, 117, 118. 

 Maidenhair fern, fruit dots of, 328. 

 Maidenhair tree, 197. 

 Maize, 158, 397. 

 Male gametophyte of angiosperms, 



380. 



Male members of flower, 379, 380. 

 Male nucleus, 227, 258. 

 Male organ, 230, 240, 304, 379, 380. 

 Mallow family, 413. 

 Malt diastase, 134. 

 Malvaceae, 413. 

 Mandarins, 412. 

 Manila hemp, 402, 405. 

 Maple family, 412. 

 Marchantia, 3Q4-3 11 , 3*5- 

 Marchantiales, 315. 

 Marsilia, 41. 



Matteuccia struthiopteris, 340. 

 Medicago denticulata, 122. 

 Medulla, 57. 

 Medullary rays, 57, 60. 

 Megaspore, 348, 382. 

 Meiboreia, 203. 

 Melampsorella cerastii, 280. 

 Mendelism, 459. 

 Mendel's law, relation to plant 



breeding, 476. 

 Meristem, 32. 

 Mesocarp, 188, 194. 



