INDEX 



483 



Hepatics, thallose, 257, 258 

 Heterocyst, 156 

 Heteroecious, 233 

 Heterogamous, 169 

 Heterospory, 332, 337 

 Heterostyly, 448 

 Hickory, fruit of, 420 



leaves of, 32 

 Hilum, 123 

 Honey locust, 437 

 Honeysuckle, 371 

 Hop, twining, loi 

 Hormogonium, 155, 156 

 Horsechestnut, 29 

 Horsetail, 319 

 Hybrid, 132 

 Hydnaceae, 245 

 Hydnum, 245 

 Hydrodictyon, 173 

 Hydrophytes, 37 

 Hymenium, 230, 244 

 Hypha, 205 



Hypocotyl, 119, 382, 413 

 Hypocreales, 227, 229 

 Hypogynous, 370 

 Hypoxylon. 227 

 Hysteriographium, 228 



Indian-pipe, 457 

 Indusium, 309, 310 

 Inflorescence, 366 

 Insectivorous plants, 282, 465 

 Insects, crossing by, 113, 366, 372, 

 _ 397. 398, 402, 409, 461 

 sight and sense of smell, 401 

 Integument, no, iii, 340, 382, 413 

 Intercellular spaces, 9, 20 

 Involucre, 273, 275, 277, 451, 472 

 Ipomoea, 460 

 Iris, 404 

 Ironweed, 476 

 Irritability, 31, 57, 98, loi 

 Isogamous, 168 



Jacket-cells, 341, 342 

 Jack-in the-pulpit, 395 

 Jeffrey, 302 

 Juglandales, 418 

 Juglans, 420 

 Juncus, 403 



Jungermaniales, 274, 275 

 Juniperus, 360, 361 



Keel, 436, 438 

 Kelps, 193 



Kerner, 64 



Key fruit, 365, 444 



Klebs, 174 



Knees of cypress, 43 



Knot, 94, 95 



Labellum, 405, 406, 408 



Labiatae, 461 



Lactuca, 32 



Laminaria, 194 



Larkspur, 426 



Lateral roots, 54 



Latex, 420 



Lathyrus, 438 



Leaf, arrangement of, 25-31 



compound, 29 



fall of, 40, 41 



lobing of, 28 



movement, 31-34 



reduction of, 42 



structure of, 7-12, 34-40 



work of, 1 1-25 

 Leaf-scar, 68 

 Legume, 383 

 Lenticel, 82, 83 

 Leotia, 231 



Lepidium, 373, 379, 380 

 Lespedeza, 33 

 Lessonia, 194 

 Leucoplasts, 2, 18 

 Lichens, 250-254 

 Licmophora, 158 



Light, 4, 13-14, 17, 29, 34, 39, 59, 

 Ligulate flowers, 472 

 Lilac leaf, 9 

 Liliales, 398 

 Lily, fawn, 399 

 Lily order, 398 

 Linaria, 464 

 Linin, 51, 52 

 Linnaea, 467 

 Liverworts, 257 



horned, 278 

 Living substance, 1-6 

 Livingston, 172 

 Lobelia, 469 

 Lockjaw, 153 

 Lodicules, 393, 394 

 Lomentum, 440 

 Loosestrife, 459 

 Lycogala, 143 

 Lycoperdales, 247 

 Lycoperdon, 247 

 Lycopodiaccae, 328 



