From: ir@ene.nu   
      
   On Sat, 19 Nov 2005 09:41:16 +0100, "Basr"  wrote:   
      
   >Can someone tell me what the brown spot on this birch is. I thought it is a   
   >kind of rust but in my books I could not find a description of a fungus that   
   >causes such spots om stems of birches.   
   >   
   >Thanks in advance   
   >Marcel   
   >   
   >   
   >http://home.hetnet.nl/~spleen   
      
   I think the birch has been leaking some sap. That might be an early   
   sign of Inonotus obliquus, or just cracks caused by the birch growing.   
      
   Irene Andersson   
      
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