INDEX. 



Gne tales, 316 



Gonidia, 118, 143, 172, 174, 178- 



184 

 Gonidiangium (go"nid-an'gi-um), 



178 



Gonidium, 213 

 Gooseberry, 496 

 Goosefoot family, 495 

 Gracilaria, 173, 174, 175 

 Graminales, 492 

 Gramineae, 492 

 Grape, 498 

 Grass family, 492 

 Grassland formation, 471 

 Green algae, 158 

 Growth, 118-124, 380 

 Gulf weed, 170 

 Gymnosperms, 311, 456 

 Gymnosporangium, 194 

 Gyncecium, 320, 419, 451, 452 

 Gyrocephalus, 219 



Halophytes, 468 



Harpochytrium, 214, 215 



Haustorium, 87, 88 



Hawkweed, 502 



Hawthorn, 497 



Hazelnut, 452, 495 



Head, 428 



Heart leaf, 495 



Heath family, 499 



Heliotrope, 500 



HeKotropism (he-li-ot'ro-pism), 



127-131, 133, 397 

 Helvellales, 217 

 Hemiascomycetes, 216 

 Hemibasidiomycetes, 218 

 Hepaticae, 242 



Heterospory (het"er-os'po-ry), 434 

 Heterothallic, 180 

 Heterotrophic plants, 85 

 Hickory, 494 

 Hickory nut, 452 

 Hilum, ioi, 102 

 Hippocastanaceae, 498 

 Holdfasts, 418 

 Hollyhock, 498 

 Homothallic, 180 

 Honeysuckle, 501 

 Hormogonales, 163 

 Horse-chestnut, 498 

 Horsetails, 280-283 

 Houstonia coerulea, 437 

 Huckleberry, 499 



Humus saprophytes, 85, 91 

 Hybridization, 338 

 Hydnaceae, 210, 219 

 Hydnum coralloides, 210 

 Hydnum repandum, 211 

 Hydrocarbon, 75 

 Hydrodictyaceae, 161 

 Hydrophytes, 468 

 Hydropterales, 295 

 Hydrotropism (hy-drot'ro'pism), 



133. 134, 412 

 Hygrophytes, 468 

 Hymeniales, 219 

 Hymenogastrales, 219 

 Hymenomycetes, 219 

 Hymenomycetineae, 219 

 Hymenophyllaceae, 295 

 Hypericum, 498 

 Hypocotyl (hy'po-co"tyl), ioi 

 Hypocreales, 217 

 Hypogenous, 425 

 Hyponastic (hy-po-nas'tic), 129 

 Hyponasty (hy'po-nas-ty), 129 

 Hysteriales, 217 



Impatiens, 498 



Impatiens fulva, 460 



Indian-pipe, 499- 



Indian-turnip, 493 



Indusium, 252 



Inflorescence, 426 



Insectivorous plants, 133, 496 



Integument, 304 



Intramolecular respiration, 113, 114 



Inulase, 108 



Inulin, 108, 417 



Iodine, 65 



Ipomoea, 500 



Iridaceas, 493 



Iris, 493 



Irritability, 125-135 



Isoetales, 296 



Isoetes, 289-291, 292 



Isoetineae, 296 



Ivy, 498 



Jack-in-the-pulpit, 373 

 Jewelweed, 498 

 Juglandales, 494 

 June-berry, 497 

 Jungermanniales, 242 



Kalmia latifolia, 444 

 Karyokinesis, 341-344 



