562 



Minnesota Plant Life. 



Spore, Slime-mould, 28 



Smut, 49 



Sphere-alga, 37 



Yeast-plant, 73 



Spore-producing leaves, Four- 

 leaved water-fern, 166 

 Sporeling, Care of, 519 

 Spotted-leafed geranium, 305 

 wintergreen (See Pipsisse- 



wa, 350, 352 



Spring-beauty (Engr. 262), 262, 465 



flowers, 426, 479 



Spruce (Half-tone, 7, n, 145), 7, 



12, 24, 54, 192, 424, 436, 442, 457, 460 



Branch, 422 



Seed distribution, 20 



swamp, 353, 472 



woods, 352 



Black, 186, 192 



Muskeg, 186, 192 



White, 186, 192 



Spurge, 305, 307 



family, 305, 418, 470,480, 506 



Seed distribution, 20 



Flowering, Resemblance 



to dogbane, 308 



Mat, 308 



Spurred gentian, 363 



Squash, 394 



Fruit, 423 



Squaw huckleberry, 356 



-weed, 412 



Squawroot, 385 



Squirrel corn, 276 



St. Croix river (Half-tone, 195), 327 



St. Croix river valley, 



56, 179, 330, 334, 355, 356, 389 



St. John's-wort, 326 



Marsh, 326 



St. Louis county, 146 



St. Paul, 221, 267, 323, 325 



St. Vincent, 259 



Staghorn-fungus, 86 



Stalk-fungus, 95 



Stalked puff-ball, 68 



Stamens, 197 



Definition, 181, 184 



Staminate flower, Pine, 186 



Star-cucumber, 394, 395 



-grass, 227 



Starch, 490 



-making, Fungus, 48 



-making, Green plants, 429 



-making, Lichens, 99 



Starch-making, Pond-scum, 33 

 Starflower, 358 

 Starwort, 448 

 Water-, 305, 308 

 State flower, 231 

 Stearns county, 341 

 Stem, 426 

 Annual rings, 197 

 Growth of, 432 

 -succulent, 474 

 Methods of developing, 8 

 Trailing, 512 

 Bulrush, 422 

 Higher seed plant, 234 

 Moss, 152 

 Water plant, 450 

 Xerophyte, 465 

 Stickseed, 371, 372 

 Stiff gentian, 362 

 water-buttercup, 272 

 yellow flax, 306 

 Stigma, 517 

 Definition, 181, 184 

 Stinging nettle, 254 

 Stinking smut of wheat, 48, 49 

 Stitchwort, 263 

 Stolon, 512 

 Stone-crop, 282 

 -crop, Ditch, 282 

 Stonewort, 38 

 Storage of food, 490 

 Strawberry, 280, 289, 419, 511 

 Flower axis, 345 

 Stream-side vegetation (Half- 

 tone), 227,448 

 Struggles of migrating plants, 24 

 Strychnine plant, 360 

 Submerged leaves, 449 

 Substances formed by bacteria, 103 

 harmful to bacteria, 104 

 Substratum, 480 

 Relation of plant to, 437 

 Succulent, 473 

 Origin, 474 

 Sucker, 512 

 Sucking organ, Dodder, 369 

 Sugar, 316 

 Manufactured from sugar- 

 maple, 314 

 -cane, 205 

 -maple, 313, 315 

 Sullivant's honeysuckle, 392 

 milkweed, 366 

 Sullivantia, 283 



