452 



GENERAL BOTANY 



Herbaceous stem, growth of, 67*, 70* 



Herbaceous stems, dicotyledons, 105- 

 108 



Herbaceous stems, monocotyledons, 

 108, 109* 



Herbaceous stems, structure, 106* 



Herbaceous stems, summary of struc- 

 ture, 108 



Heterosporous, 314, 316, 318* 



Heterostylous, 362* 



Histology, 214 



Holly, wood of, 382* 



Homogamous, 362 



Homosporous, 313, 316 



Hooke, Robert, 54 



Hyacinth, plant of, 418* 



Hybridization of corn, 178*, 179* 



Hybridization and new varieties, 180 



Hybridization of plums, 182* 



Hybridization of wheat, 180*, 181* 



Hydrophytes, 152*, 153 



Hydrophytic association, 435, 440* 



Hymenium of mushroom, 269*, 270 



Hypha, 258 



Hypocotyl of pea, 24* 



Hypogynous flowers, 358*, 359* 



Imperfect flowers, 360* 

 Inanimate environment, 3 

 Inanimate environment, forces of, 3 

 Inanimate environment, materialsof, 5 

 Inbreeding and crossing, 175 

 Inbreeding denned, 174 

 Income and outgo of animals, 9 

 Income and outgo of plants, 8 

 Incomplete flowers, 360* 

 Indehiscent fruits, 365, 368* 

 Industrial biology, 215 

 Industrial relations of plants, 12 

 Inflorescence, nature and kinds of, 



357*, 358* 



Inflorescence and pollination, 107, 108 

 Inorganic foods, 9 

 Integuments, 162*, 164, 165* 

 Internode, 4*, 15*, 16*, 17* 

 Invasion, ecological, 438*, 439*, 463 

 Invasion by fungi, 283 

 Invertase, 248 

 Ipomcea (sweet potato), vegetative 



reproduction of, 158* 

 Iridaceae, 423-424* 

 Iris, ovule and pollen tube of, 347* 

 Iris versicolor, 424* 

 Irregular flowers, 360 



Jacket cells, 334* 

 Jack-in-the-pulpit, 426* 



Keel petals, 168, 169* 

 Knight, experiment of, 32* 

 Knight, Thomas Andrew, 31 



Labellum of Cypripedium, 428* 



LadyVslipper, 427* 



Lamellse of mushroom, 268*, 269* 



Lanceolate leaf, 355* 



Lateral bud, 356 



Leaf, epidermis of, 113* 



Leaf, section of, 115* 



Leaf arrangement, 15*, 16* 



Leaf blade, 4*, 15*, 17* 



Leaf gaps, 300*, 301*, 327*, 329* 



Leaf petiole, 4*, 15*, 17* 



Leaf scars, 69*, 84* 



Leaf structure, 113, 116 



Leaf trace, 300*, 301*, 302*, 327* 329* 



Leaves, cyclic and spiral arrange- 

 ments, 16* 



Leaves, form, venation, margins, and 

 apex, 355* 



Legume, 171*, 364*, 365 



Leguminosce, 39 



Lemma of oat flower, 434* 



Leucoplastids, 49, 50* 



Lichens, 277, 278*, 279*, 280 



Life histories of algae, 228-229 



Life history of Fucus, 240, 241 



Life history of GEdogonium, 235 



Life history of Vaucheria, 233 



Lilac, body plan of, 15*, 16* 



Lilac, bud growth, 68*, 71* 



Lilac, leaf growth, 66 



Lilac, stem structure, 85* 



Lilac twigs, 69*, 84* 



Liliaceae, 418, 423 



Lily, anther and pollen of, 343* 



Lily, double fertilization in, 347* 



Lily, microsporangium and spores, 343* 



Lily, pond association, 440 



Linear leaf, 355* 



Lip cells of Sporangia, 306* 



Lobed leaf margin, 355* 



Locust, inflorescence and flower of, 

 171* 



Locust, pollination of, 170, 173 



Locust, seasonal life of, 133* 



Lodicules of oat flower, 434* 



Lupine, Darwin's experiments with, 

 177 



Lycopodiales, 315, 317 



Lycopodium, 316* 



Maidenhair fern, 297*, 299* 

 Malt, 250 

 Maltase, 248 



