Minnesota Plant Life. 



553 



Pea, Beach, 304 



Ground, 280 



Sensitive, 297 



Sweet, 295 



Peach, 280, 292 



Seed distribution, 19 



Peach-leafed willow, 241 



Peanut, 273, 280 



Wild, 297, 478 



Pear, 286, 290 



-blight, 103, 109 



Pearlwort, 263 



Peat-bog (Half-tone, 11, 145), 12, 



34, 201, 213, 231, 279, 283, 354, 



355, 357, 381, 398, 442, 457, 459, 460 



-bog, Formation, 146 



-bog, Plants, 146 



-bog, Raised, 146 



deposits, 26 



-moss, 22, 34, 145, 425, 459, 460, 462 



-moss, Fruiting habits, 147 



-moss, Parasites, 45 



-moss, Spores, 49 



-moss, Warming-up color, 146 



-moss, Water-reservoir cells, 145 



-tundra, 459, 461 



Pellitory, 254, 255 



Pembina, 259 



Pennyroyal, 375, 377 



False, 376 



Pennywort, 338 



Peony, 264 



Pepper, 236 



-grass, 275, 278 



Peppermint, 375, 377 



Peptone, 491 



Perching fern, 472 



plant, 418, 439 



Perennials, 454, 462 



Peat-bog, 460 



Perfect flower, 321 



Perfumery, Mint, 378 



Perianth, 197, 346 



Persimmon tree, 360 



Petunia, 367 



Phacelia, 371 



Philadelphia ground-cherry, 378 



Phlox, 367, 369 



Blue, 369, 370 



Common, 370 



Downy, 369, 370 



Smooth, 369, 370 



Phosphorescence, Bacterial, 104 



Pickerel-weed, 222 



Pieplant, Wild, 413 



Pigeon river, 353 



Pignut hickory, 243, 244 



Pigweed, 259, 476 



Winged, 259 



Pilewort, 381 



Pill-throwing mould, 44 



Pimpernel, False, 379 



Scarlet, 359 



Pin-cherry, 293 



Pine, 7, 9, 22, 24, 185, 186, 196, 465, 



496, 502, 515, 516, 517, 52i, 524, 525 



Comparison with yew, 194 



cone, Arrangement of scales, 346 



cone, Prototype of the 



flower, 343 



Flower, Pistillate, 186 



Flower, Staminate, 186 



forest, 6, 342, 472 



Origin, 123 



pollen grain parasites, 45 



seed, 182 



seed distribution, 20 



Jack (Engr. 188), 186 



Jack, Economic importance, 190 

 Norway, 188 



Pitch, 187 



Red, 186, 188, 472, 507 



Red, Economic importance, 188 

 White (Half-tone, 7, 187, 



189, 195), 186, 472, 507, 509 



White, Economic importance, 186 

 White, Resin, 187 



-drops, 350, 352, 438 



-knot fungus" 54 



-sap, 350, 353, 438, 490 



-sap, Nutrition, 353 



-sap, Resemblance to In- 

 dian-pipe, . 353 

 Pineapple, 223 

 Pink, 12, 259, 263, 468 

 -flowered wintergreen, 351 

 Grass, 231 

 Indian, 379 

 Pinweed, 326, 327 

 Pipe-vine, 256, 257, 418 

 -vine, Insect pollination, 257 

 Pipestone county, 330, 359, 468 

 Pipe wort, 221, 420, 448 

 Pipsissewa, 350, 352 

 Pitch pine, 187 

 Pitcher-plant (Engr. 278. Half- 

 tone, 461), 146, 278, 280, 459, 460 



