Powdery mildew caused by Golovinomyces asperifoliorum on leaves of Prickly comfrey or Symphytum asperum
Powdery mildew caused by Golovinomyces asperifoliorum on green leaves of Prickly comfrey or Symphytum asperum
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Keywords:
affectedasperifoliorumasperumcomfreydiseasediseasedfoliagefungalfungigardengeneralgolovinomycesgreeninfectionleafleavesmildewpathogenpathologyphytopathologyplantpowderypricklyroughrussianspotspotssymphytumuplandicumviewwhite
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