Minnesota Plant Life. 



557 



Purple-edged liverworts, 137 



loosestrife, 334 



milkweed, 365 



prairie-clover, 301 



Purslane, 



24, 259, 262, 437, 465. 468, 474. 476 



Rock, 474 



Salt-loving, 473 



Water-, 333 



"Pussy" willow, 241 



Putrifaction bacteria, 102, 109 



Putty-root, 228, 232 



Pyrola, Root-fungus, 89 



Quarantine, 107 



Quartz (See silica), 32 



Quince, 280, 286, 290 



Quillwort (Engr. 164), 



163, 448, 449- 450, 518, 519. 520 



Air chambers, 163 



Leaves, 4^7 



Quinine, 388 



Radial symmetry of flowers, 228 



Radish, 277 



Rafflesia, 256 

 Ragweed (Engr. 405), 



II, 399, 401, 405, 468 



family, 402 



Tall, 405 



Ragwort, 401,412 



Railway construction. Red pine 



used in, 188 



Rain-water plants, 446 



Rainy lake, 190, 194, 327. 469 



river, 362 



Raised peat-bog, 146 



Raspberry, 280, 290 



Seed distribution. 19 



Arctic dwarfed, 291 



Black, 291 



Creeping, 291 



Creeping, Resemblance to 



violet, 291 

 Red, 291 

 Sour, 291 

 Rat Portage, Ontario, Poplar veg- 

 etation near (Half-tone), 237 

 Rattlebox, 267, 298 

 Rattlesnake plantain, 231 

 root (Engr. 404), 402, 404 

 Ravine vegetation (Half-tone), 447 

 Red algae, 29, 446, 513, 520 

 algae. Reproduction, 40 

 ash, 361 



Red bacteria, 

 birch, 



cedar, 186, 



cedar, Flower, 

 clover, 

 currant, 

 elm, 

 lake, 



-leafed wintergreen, 

 lobelia, 

 maple, 

 mulberry, 

 oak, 

 osier. 



115 



246, 247 



192, 193, 472 



346 



298 



284 



252 



304 



351 



397 



313,315 



253 



249, 250 



341, 342 



pine, 186, 188, 472, 507 

 pine. Economic importance, 188 



raspberry, 291 



river, 3 

 river valley, 7, 259, 260, 263, 



332, 333, 359. 376, 387. 473, 476 



rust, 51 



seaweed, 522, 523 



snow, 36, 424 



-stemmed gentian, 363 



-veined dock, 258 



-wood. Fossil, 26 



Redbud, 280, 296 



Redroot, 259, 319 



American, 319 



pigweed, 261 



Red Wing, 267 



Redwood Falls, I93, 33° 



river, Derivation of name, 342 



Reed (Half-tone), 18, 199 



-grass, 13, 205, 206, 



451, 457. 458, 459 



-grass, Rootstock, 455 



Marsh, 457 



Reed, Bur- (Engr.), 198 



Rein orchid, 228, 231 



Reindeer-moss (Lichen), 



96, 98, 141, 462, 469 



-moss, Edible, 98 

 Relations of bacteria to man. 120 



Reproduction, 488, 509, 512 



Definition, 511 



Black mould, 44 



Fungus, 87 



Liverwort, 127 



Moss, 126, 127 



Pond-scum, 33 



Red algae, 40 



Water-net, 36 



