INDEX 



547 



Hybridizing, 501, 502*, 509-513* 

 Hybrids, production of, 501, 502*, 



509-513* 

 Hydnum, 265* 

 Hydrogen, 28, 29 

 Hydrophytes, 459-462*, 482, 488 

 Hydropterales, 320 

 Hymenium, 264, 267* 

 Hymenomycetes, 264-267* 

 Hypha, 240 



Hypocotyl, 5*, 6*, 12*, 16 

 Hypocotyl, cross section of, 65* 

 Hypogynous, 130* 

 Hypogyny, 395 



Iceland moss, 256*, 257 

 Imperfect fungi, 254 

 Indefinite annual growth, 42 

 Indehiscent fruits, 147-149* 

 Indeterminate inflorescence, 132*, 



133 



Indian corn, kernel of, 7* 

 Indian corn, root tip of, 24* 

 Indian corn, structure of stem of, 



58* 



India-rubber plant, leaf of, 465* 

 Indusium, 308*, 313 

 Inferior ovary, 130*, 135*, 150* 

 Inflorescence, 132-137* 

 Inflorescence, determinate, 136, 137* 

 Inflorescence, diagrams of, 136* 

 Inflorescence, indeterminate, 132*, 



133 



Insectivorous plants, 409-412* 

 Insect pollination, 422-432* 

 Insects, pollen-carrying apparatus of, 



422*, 423 

 Insects, sense of smell of, 423, 



424 



Insects, vision of, 424 

 Insect traps, leaves as, 409-412* 

 Insertion of floral organs, 130* 

 Integuments, 356, 362*, 370*, 371, 



381, 383*, 386* 



Intercellular spaces, 103*, 111* 

 Internal structure of dicotyledonous 



stem, 59-62* 

 Internal structure of monocotyledo- 



nous stem, 57, 58* 

 Internode, 16, 17* 

 Invasion, 451, 452 

 Involucre, 134, 135* 

 Iris, rootstock of, 51* 

 Irish moss, 214*, 216 

 Iron, 28, 29 



Irritability in plants, nature and oc- 

 currence of, 35, 36, 49, 97-99* 

 Irritability in roots, 39 

 Irritability of protoplasm, 35, 36 

 Irritability of tendrils, 48*, 49 

 Isoetes, 338*, 339* 

 Isogamy, 186, 204, 224 

 Ivy, aerial roots of, 20* 



Jungermanniales, 285-287* 



Keel, 125* 



Kelps, 207*, 208*, 209* 

 Kidney-shaped, App. I 

 Knees, 111, Plate III 

 Knot and wart fungi, 252* 

 Knots, 67, 68* 

 Krakatoa, 456 



Labiate, App. II 

 Lachnea, 251* 

 Lamina, 88 

 Laminaria, 207* 

 Lanceolate, App. I 

 Lateral buds, 40*, 46*, 82* 

 Leaf, 15-18*, 88-122* 

 Leaf, accumulation of mineral mat- 

 ter in, 120 



Leaf arrangement, 94-101* 

 Leaf bases, 52*, App. I 

 Leaf blade, 88 



Leaf buds, 40, 41, 45*, 46*, 83*, 84* 

 Leaf, fall of, 120-122 

 Leaf forms, 90 

 Leaflet, 85, 86* 



Leaf, member of plant body, 88 

 Leaf mosaics, 95*, 96, 97* 

 Leaf outlines, App. I 

 Leaf scars, 52*, 81* 

 Leaf sections, 102, 103*, 465*, 466* 

 Leaf spine, 416*, 417* 

 Leafstalk, 88 

 Leaf tendril, 92* 

 Leaf tips, App. I 

 Leaf traces, 105*, 106 

 Leafy liverworts, 285-287* 

 Leaves as insect traps, 409-412* 

 Leaves, compound, 91-93* 

 Leaves, cutting, 418* 

 Leaves, divided, 90, 91* 

 Leaves, functions of, 102-122* 

 Leaves, movements of, 97-101* 

 Leaves of xerophytes, 466*, 466* 

 Leaves, simple, 88-91* 

 Leaves, structure of, 102-122* 



