another Ornithogalum mystery

Kathleen Sayce
Fri, 07 May 2010 21:19:04 PDT
This spring in my garden a fungus appeared on that thug, O.  
umbellatum. It kills the leaves back, which eventually shrivel into  
black threads. The fungus doesn't spread, or more accurately, has not  
spread to other geophytes in the garden, even when infected leaves  
lay on other leaves.
Does anyone know what disease this might be? I have only online  
references, and none of the pages I could turn up described this fungus.
PNW coast, z 8, and first day above 60F in weeks was today. 

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