4o6 



Minnesota Plant Diseases. 



Cats, fungi on, 73 



Cattle, fungi on, 73 



wounds caused by, 47 



Cauliflower, 



black rot of, 342 



sterile-fungus rot of, 329 



Cause, immediate, of disease, 2 



Cedar apple, of red cedar (Figs. 



181, 182), 347.348,349 



rusts of, 160, 164, 166 



Cedar, red, 



bird's-nest broom of, 165 



bird's-nest rust of, 350 



Cedar, white, 



Jews' ear on, 167 



Celery, 



leaf blight of, 328 



?terile-fungus rot of, 329 



Cells of wood tissues, 85 



Cellulose, in cell walls, 85 



Cercospora apii, 328 



beticola, 328 



violas, 381, 382 



Cereal rusts (see rust of wheat). 



Cereal smuts, 158 



Cereals, rust-proof varieties, 289 



Chastomiacese (Fig. 60), 136, 137 



Cheese, bacteria in, 196 



green mold on, 118, 122 



Cherry, 



black knot of (Fig. 191), 



135, 136, 35S, 359, 360 

 broom on, 56 



brown rot of, 357 



leaf rust of, 350 



pockets of, 120, 361 



powdery mildew of (Fig. 



192), 360, 361 



scab of, 363 



stunting by pocket fungi, 82 



witches'-broom of, 121, 271, 363 



Chickens, parasites on, 73 



Chickweed, rust of balsam fir, 278 



Chlorosplenium Kruginosum, 267 



Chondrioderma difforme (Fig. 



100), 197 



Chrysanthemum, powdery mil- 

 dew of, 379, 380 

 rust, 371, 372 

 Chrysomyxa pirola;, 386 

 Chytridineae (Fig. 41), 104, 105 

 Cladosporium carpophilum, 363 

 Clamps, hose (Fig. iii), 228 



Clams, parasites of, 67 



Classification of diseases, 1 



Clavaria, species of (Fig. 83), 173 

 rots of wood, 244 



Clavariacese (Fig. 83), 172, I73, 174 

 Claviceps purpurea (Figs. 154, 



155), 306, 307, 308, 309 



Cleanliness in prevention of 



spread, 207 



Clover, bacterial nodules of, I95 



black mold of (Fig. 153), 30S 

 cup fungi on, i45 



cup fungus leaf spot, 309, 310 

 damping-ofif, 109, 382 



dodder on, 200 



downy mildew of, 112, 314 



leaf rust, 292 



leaf spot of, 309, 310 



rotation of crops and bac- 

 teria, 196 

 rusts, 166 

 Clothes, mildew of, 43 

 Club fungi (Fig. 83), 172, 173, 174 

 earth-dwelling habit, 39 

 edible forms, 174 

 fruiting bodies, 23 

 rots of wood, 244 

 Club root of cabbage, radish, 



etc. (Figs. 179,180), 345,346 



Club root of beets, , ig8 



Club rust of juniper, 349, 350 



Cluster-cup, 



of ash-leaf (Figs. 75, 76), 



162, 163 

 rust of composites, 387 



rust of gooseberry and cur- 

 rant, 317, 386, 387 

 rusts of wild flowers, 386 

 Coal spot diseases, 151 

 Coccus, a bacterial form, 190 

 Ccelenterates, parasites of, 66 

 Cofifee rusts, 166 

 losses by, 201 

 Coleosporium sonchi-arvensis 



(Fig. 20s), 376, 388 



Collards, black rots of, 342 



CoUetotrichum lindemuthianum, 327 

 CoUybia rot, velvet stemmed 



(Fig. 130), 264,265 



CoUybia velutipes (Fig. 130),. 



264, 26s 

 Colorations of bacteria, 194 



Columbines, rust of, 386 



