Assertion: oak's disease | /r/CreatedBy | the fungus
Facets:
Source sentences:
text: This disease, caused by the fungus Armillaria mellea, is widespread on oak.
text: This disease is caused by several fungi (Erysiphe trina, Microsphaera alni, Phyllactinia corylea and/or Sphaerotheca lanestris).
text: Warnings Bur oaks are susceptible to oak wilt, a fatal disease caused by the fungus Ceratocystis fagacearum.