Minnesota Plant Diseases. 



403 



Bacteria, 



zoogloea, igo 



Bacterial purple, 194 



Ball-throwing fungus, explosive 



apparatus, 33 



Balsam fir, 



green cup-fungus rot, 267 



canker of stem, 268 

 Jews' ear fungus on (Fig. 



79), 167 

 witches'-broom of (Fig. 23), 



S3, 277, 278 

 Barberry, rust spores on leaf 



(Fig. 73), IS9 



pycnidium on leaf (Fig. 74), 161 

 wheat rust on (Fig. 145), 



283, 2S5, 290 



Bark, tree, smooth shelves on, 171 



Barley, covered smut of, 300, 302 



ergot on, 130 



naked smut, 300 



rust (see rust of wheat). 



Barrel pumps (Figs. 104, 105), 



213, 214, 230 



in action (Fig. 107), 217 



Basidiomycetes, 153 



Basidium, of Jews' ear fungi 



(Fig. 78), , 166 



of palisade fungi (Fig. 81), 170 



of rusts (Fig. 73), 159 



of trembling fungi (Fig. 78), 166 



of weeping fungi (Fig. 78), 166 



true, 155 



Basidium-bearing fungi, 



IS3, IS4, ISS. 170 



Bean, anthracnose of, 327 

 bacterial nodules of (Fig. 



98), 195 



downy mildew of, 112, 336, 337 



leaf blight, 342 



rust (Fig. 162), 166, 319 



sterile-fungus rot of, 329 



Bear's head fungus, 175 



fruiting bodies of, 23 



rot of timber, 244 



Beefsteak fungi, 177 



Beer, bacteria in, 196 



Beer-making (see yeasts). 



bacteria in, 195 



Bees' nest dwelling habit, 42 



Bees' nest, fungi on, 122 



Beet, damping-off of, 109 



downy mildew of, 112, 33Q 



Beet, 



leaf spot of, 328 



scab, 327 



sclerotium disease of roots, 322 



slime mold parasite of, 198 



sterile-fungus rot of, 329 



Beetle fungi, 139, 140 



on insects (Fig. 30), 68, 69 



origin of, 140 



Beetles, parasites of, 71 



Biologic species, 88 



of rusts, 289 



Birch, fungi on branches, 139 



gill fungus on (Fig. 86), 177 



green cup-fungus rot, 267 



hairy pore fungus, 257 



leaf rust, 279 



parchment pore-fungus rot, 258 



powdery mildew of, 



125, 272, 377, 395 



sapid fungus rot (Fig. 131), 265 



shelf fungus, 175 



slime flux of, 271 



witches'-broom on, 56, 121, 27/ 



Birch-fungus rot (Fig. 126), 254, 255 



Birds, parasites on, 73 



Bird's-eye rot of grape, 367 



Bird's-nest fungi (Fig. 13), 186 



fruiting bodies, 23 



spore distribution, 29 



Bird's-nest rust of red cedar, 350 



Bird's-nest witches'-broom 



(Figs. 26, 57), 54, 55 



Bitter rot of apples (Fig. 190), 



356, 357 

 Blackberry, orange rust of 



(Fig. 160), 316,317 



Black haw, powdery mildew of 



(Fig. si), 125 



Black knot (Fig. 59), 13S, 136 



allies of, 135, 136 



fruiting bodies of, 23 



on plum and cherry (Fig. 



191), 3S8, 3S9, 360 



Black fungi, I23 



apple scab, 3Si 



black rot of tomato, 329 



black rot of vine, 365 



early blight of potato, 329 



imperfect fungi of, 149 



red disease of mushrooms, 395 



red knot rot, 271 



