Minnesota Plant Life. 



555 



Plant. Rock, 418, 446, 467, 468, 469 

 Rosette, 429, 433, 47O 



Salt, ' 436,473 



Sand, 469. 470 



Sensitive, 280 



Sensitive, Wild, 297 



Shade, 219, 418 



Shore, 447 



Shore, Distribution, 451 



Sun, 418 



Surf, 214, 420 



Swimming, 445 



Switch, 214 



Tea, 326 



Twining, 439 



Wand, 418, 472 



Yeast, 73 



Plantain, 375, 386, 468, 470, 473, 480 

 family, 4 T 5 



Flower, 387 



Resemblance to lizard's-tail, 237 

 Bracted, 387 



Common, 387 



Heart-leafed, 387 



Indian, 412 



Rattlesnake, 231 



Rib, 387 



Rugel's (Engr. 386), 387 



Salt marsh, 387 



Water-, 197, 201 



Woolly, 387 



Plates, 506 



Plow-handles, Manufactured 

 from hickory, 244 



Plum, 280, 292, 478 



Black knot, 85 



Canada, 293 



Ground-. 298 



-pocket, 74 



Pocket-fungus, 74 



Wild, 293 



Pocket-fungus on cherry, 74 



-fungus on plum, 74 



-;ungus on poplar, 74 



Pogonia (Half-tone, n), 228 



Poison-ash, 310 



-dogwood, 310, 506 



-elder, 310,311,312 



-hemlock, 338, 339 



-ivy, 309,310,311,506 



-ivy. Resemblance to wood- 

 bine, 31.1 

 -oak, 309, 310 

 -sumac, 310, 462 



Poisoning, Antidotes for ivy or 



elder, 311 



Poisonous algae, 41 



ergot-tuber, 82 



fungi, Tamarack swamp, 59 



leatherwood bark, 332 



moccasin flower, 231 



mushroom, 61, 82 



orchid, 232 



parsley roots, 339 



pore-fungus, 82 



shelf-fungus, 59 



Poke milkweed, 366 



Pokeweed (Engr. 260), 259, 261 



Polemonium, 370 



Polishing powder, Diatom, 39 



Pollarded willow, 241 



Pollen grain, Definition, 181, 184 



grain, Parasites, 45 



spores, 517 



spores, Germination in sugar, 502 



-tube, Definition, 182 



Pollination, 345, 517 



Cross-, 230,517 



Insect, 348 



Bladderwort, 384 



Milkweed, 364 



Mint, 377 



Orchid, 229 



Pipe-vine, 257 



Polygala, 305, 307 



family, 307 



Polypody, 165, 468 



Pomegranate, 332 



Pomme de terre, 298, 300 



Pond-lily, 13, 30, 266, 451 



-lily, Common yellow, 266, 448 



-lily, Small yellow, 266 



-scum (Engr. 34. Half-tone, 



35), 33, 4i, 443 



-scum, Nutrition, 33 



-scum,, Parasites, 45 



-scum, Reproduction, 33 



-scum, Starch-construction, 33 



Pondweed (Half-tone, 199), 13, 38, 

 199, 273, 448, 450, 45i, 452, 453, 512 

 Resemblance to true milfoil, 336 

 Clasping-leaved (Engr.), 200 



Pool-moss, 152 



Poor man's weather-glass, 358, 359 



Poplar (Half-tone, 195), 



233, 237, 238, 425- 427, 470, 478 

 scrub, 477 



Seed distribution, 20 



