Minnesota Plant Diseases. xix 



FIG. 116. Fungus fruiting boaies of a gill fungus, on street railway ties. 



Photograph by Dr. F. Ramaley 236 



FIG. 117. A Stereum wound parasite. Original 241 



FIG. 1 18. Partridge wood rot. Original 242 



FIG. 119. The coral fungus, on the under surface of a log. Original. . 246 



FIG. 120. The fruiting body of the dry-rot fungus. Original 245 



Fie. 121. The dry-rot fungus on a pine board. Original 248 



FIG. 122. The dry-rot fungus on pine boards, showing later stages, of 



decay than that in Fig. 121. Original 249 



FIG. 123. The fruiting body of the flattened pore-fungus, on a standing 



dead tree trunk. Original 252 



FIG. 124. Fruiting bodies oi the sulphur pore-fungus, on a dead oak 



stump. Original 253 



FIG. 125. Fruiting bodies of the scaly pore-fungus seen from both sur- 

 faces. After Loyd .'5 j 



FIG. 126. Fruiting body of the birch pore-fungus, on a branch of a 



white birch. Original 255 



FIG. 127. Fruiting bodies of an undetermined pore fungus on a bass- 

 wood log. Original 257 



FIG. 128. Fruiting bodies of the honey-colored mushroom, at the base 



of a tree. Original 261 



FIG. 129. Fruiting bodies of the fatty Pholiota in a wound of an oak 



tree trunk. Original 263 



FIG. 130. The velvet-stemmed Collybia on a decaying log. Original. .'(14 

 FIG. 131. Fruiting bodies of the sapid Pleurotus on a standing yellow 



birch trunk. Original .'65 



FIG. 132. Fruiting bodies of the pine Leti/itc*. common on soft woods 



Original i, 



Fir,. 133. Tar spots of willow and maplr. ( )ri^in;il ... _>6o 



FlG. 134. Powdery mil. lew of willow leal. Original. 



FIG. 135. Powdery mildew of elms on ;in dm leal. < )riginal .'74 



Fir.. 136. Pine knot on Scotch pine. Original ^~t t 



