Minnesota Plant Diseases. 



423 



Radish, 



club root of, 345 



sterile-fungus rot of, 329 



white rust on, 330 



Railway ties, gill fungus on 



(Fig. 116), 236 



rot of, 87 



Rag weed, powdery mildew of 



(Fig. 210), 396 



Raspberries, orange rust of, 316, 317 

 Razoumofskya pusilla (Figs. 



24, 25), 54, 55, 280, 281 



Red cedar, witches'-broom on 



(Fig. 26), 54,55,57 



Red disease of mushrooms, 395 



Red knot. 134 



of currantb, 322, 323 



rot, 271, 272 



Red rust of raspberry, etc. (Fife 

 160), 3i6,3i7 



of wheat (see rust of 



wheat), 291 



Red sea weeds, 9 



Reed grass, ergot on (Figs. 



53- 155), 127,309 



Reed mace fungus, 306 



Refuse, burning of, methods of 



cure, 209 



Rennet bacteria, 196 



Reproduction of Fungi, 21 



Reproductive, systems of para- 

 sites, 10 

 Resin bordeaux for asparagus 

 rust, 319 

 mixtures, 218 

 Rhizina inflata, 270 

 Rhizoctonia, species of, 329 

 Rhubarb, sterile-fungus rot of, 329 

 Rhytisma acerinum (Fig. 133), 



268,269 



salicinum (Fig. 133), 270 



Rice, wild, ergot on (Fig. 



155), 130, 307, 308 



Ring disease of cone bearing 



trees, 270 



scale of pine, 256 



Rings, fairy, 18 



Ripe rot of apples (Fig. 190), 



356, 357 



of fruits, 44, 353 



Rocks, lichens on, 146 



Rcot, hairs, fungus, 186 



Root, 



-inhabiting parasites of, 64 



nodules, bacteria of (Fig. 



99), 196 



parasites, seed plants, 200 



rot of currant (Fig. 163), 321 

 rot of trametes, 256 



smut of sedge, 394 



tubercles of pea family, 50 



Roots, bacteria in (Fig. 98), 



192, 195 



rust on, 164 



sclerotium disease of, 322 



sphere fungi on, 138 



sucker, of mistletoe, 200 



Rose family, powdery mildew 

 of hops or 32} 



leaf rust (Figs. 190. 200, 



201), 67b 



powdery mildew of (Figs. 



203, 204), 125, 378, 379 



stem rust, 375, 376 



Rotation of crops and bacteria, 196 



of crops, advantages of, 205, 206 



Rot, black, of tomato, 328 



brown, of potato tubers, 332 



flattened pore fungus (Fig. 



123), 251,252 



method of attack on wood 



cells (Fig. 38), 85,86 



of apples, and plum, brown, 



357, 358 



of apples, bitter or ripe 

 (Fig. 190), 356, 357 



of apple, black (Fig. 194) 



363, 364 

 of cabbage, black (see black 



rot of cabbage), 

 of false tinder fungus, 250 



of fruits, 44 



of fruits, imperfect fungi, 152 

 of fruits, ripe, 353 



of fruits, soft (Figs. 188, 189), 



353, 355, 356 



of fruits, storage, 353 



of grapes, bird's-eye, 367 



of root, trametes, 256 



of scaly pore fungus (Fig. 



125), 254 



of shoe string fungus 



(Fig. 128), 260,261,262 



