

262 



10. Giissow, H. T. Eeport of Dominion Botanist. Depart- 

 ment of Agriculture for Canada, 1910. p. 268. Zeitschrift fur 

 Pflanzenkrankheiten. Vol. XXII. Heft T. p. 385. 1912. 



11. Sinolak, Jar. Annals of Applied Biology. Vol. II., 



P 



133. 1915. 



Explanation of Text Figures. 



All the figures have been reduced bv one half for reproduction. 



1. Longitudinal section through the wood of a silvered sucker 



of ^Brompton Stock/' .showing hyphae of S. purpureum 

 in a vessel, with two distinct clamp connections. x 1000 

 times. 



Longitudinal section through the wood of Prunus triloba var. 

 fiore plena, showing hyphae of >'. purpuveum in the xyleiu 

 vessels bordering the cambium. In one case the hyphae 

 pass through the discoloured area. The cambium cells 

 .have fallen apart. x 1000 times. 



3. Longitudinal section through the wood of a silvered Apple 



(said to be " Bramley's Seedling "), showing abundant 

 hyphae in the wood vessels, with numerous clamp connec- 

 tions. The hyphae are unusually irregular in form, 

 x 10CM) times. 



4. Longitudinal section of a silvered branch of Spiraea japonica 



var. ylabrala, showing the hyphae in the wood vessels. 

 x 1000 times. 



5. Longitudinal section of a diseased root of Neviusia 



ahi ha men sis, showing presence of hyphae and alternate 

 discoloration of the cells. x 1000 times. 



6. I longitudinal section of a silvered shoot of Neviusia 



alabamensis, with hyphae in the xvlem vessels. x 1000 



times. 



T. Longitudinal section of a silvered shoot of Ribes cereum, 



showing the hyphae and pronounced discoloration in the 

 wood vessels. x 1000 times. 



8. Radial longitudinal section of the xvlem vessels of Laburnum 



vulgare, showing deep discoloration and abundant hyphae 

 of S. purpureum. x 1000 times. 



Df.sc riptiox of Plate VIII. 

 Fig. 1. A >; rilizt-d block of Plum wood upon which a piece of 



Stereum purpureum had been placed. The figure shows 

 that the discoloration extends beyond the region of the 

 hyphae; (1) indicating the extent of the discoloration, 

 (2) the limit of hyphae, and (3) the portion of fructifica- 

 tion placed on the wood. 



» » 



O " --""t. 



coriing of the leaves. The letter x indicates that the upper 

 epidermis has been detached from the palisade cells. 



' 







2. Branch of Prunus lusitanica, showing silvering and I 







