412 



Minnesota Plant Diseases. 



Galls, fungus (Fig. 37), 78,82,83 

 on blueberry and heaths, 56, 171 

 on Labrador tea (Fig. 37), 83 

 Garden plants, sterile-fungus rot 

 of, 329 



truck diseases, losses by, 202 

 Gasteromycetes (Figs. 90 to 



95), 153, 154, *8i, 182 



Gear power pump (Fig. 106), 216 

 Geaster triplex (Fig. 93), 185 



Gelatinous pore fungi, 175 



Gemmed puff-ball (Figs. 90, 



91), 181, 182 



Germination of a spore, 18 



of spores, physiology of, 19 



Giant puff-ball, 186 



Gill fungi (Figs. 86, 87, 88, 



89), 178, 179, 180 



elm Pleurotus rot, 265 



fatty Pholiota rot, 262 



fruiting bodies, 23 



honey-colored fungus, 261 



on railway ties (Fig. 116), 236 

 on stems, 64 



on sticks (Fig. 86), 177 



pine Lenzites, 266 



scaly Lentinus rot, 267 



scurfy Pholiota rot, 263 



shoestring fungus, 260 



timber rots and wound 



parasites, 235 



velvet stemmed Collybia 



rot, 265 



wound parasites, 47 



Gills of gill fungi, 178 



Ginger beer plant, bacteria of, 193 

 Glceosporium ribis, 327 



Glomerella rufomaculans (Fig. 



190), 356 



Golden-rod and aster leaf-rust, 376 



Golden-rod rust (Fig. 205), 160, 388 



Gooseberry, anthracnose of, 327 



cluster-cup rust of, 386, 387 



pore-fungus rot, 320 



powdery mildew of, 125, 325 



rust of, 3x7 



Goosefoot family, downy mildew 



of > 339 



Gourds, downy mildew of (Figs. 

 1 68, 169, 170, 171), 



334, 335, 336, 338 

 Grain smut of sorghum (Fig. 



15*), 299 



Grains, smuts on, 155, 158' 



Grape sugar, yeasts in, 119 



Grape, anthracnose of, 367, 368 



black rot of, 365, 366 



diseases, losses by, 201 



downy mildew of (Figs. 196, 



197, 198), no, 112, 368, 369, 3?o< 

 powdery mildew of, 125, 366, 367 

 root disease of, 138 



Grass, canary, ergot on (Fig. 

 54), 128' 



ergots (Figs. 53, 54), 127, 128 

 family, downy mildew of, 112- 

 pigeori, smut of, 394 



rusts, 160 



Grasses, ergot disease of (Figs. 

 154, 155'), 306,307,308,309 



powdery mildew of (Fig. 



152), 304 



rusts of (see also rust of 



wheat), 165, 166 



smothering fungus of, 306 



smuts on, 158 



strangling fungus of (Figs. 



57, 58), 132, 133 



Grasshopper, losses by, com- 

 pared with wheat rust, 201 

 Green cup fungus rot, 267 

 Green felts, 9 

 Green islands, 84 

 Green molds, 122 

 Green mold, allies, 123 

 amateur parasites, 78 

 disease in man, 75 

 fruit rots, 44 

 on animals, 66 

 on food, 43 

 on cheese, 43, 118 

 rot of timber, 270 

 Greenhouse plants, diseases of, 371 

 Grey mold of lettuce, 381 

 Ground, Boletus on (Fig. 85), 176 

 cup fungi on, 142 

 puff-balls under, 184 

 morel allies on, 148 

 tooth fungi on, 175 

 Grubs, fungi on, 130, 131, 132 

 Guignardia bidwellii, 365, 366 

 Gymnoascaceae (Fig. 49), 121 

 Gymnoconia interstitialis (Fig. 



160), 316,317 



Gymosporangium clavariseforme, 



349, 350 



