Oidium (genus)

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Oidium is a genus of Deuteromycetes, where traditionally most anamorphs of the order Erysiphales are included. Most of them are plant pathogens causing different forms of powdery mildew, for example:
  • Oidium alphitoides (= O. quercinum) = Microsphaera alphitoides (on oaks)
  • Oidium anacardii (= Acrosporium anacardii) (on cashew)
  • Oidium arachidis (on peanut)
  • Oidium balsamii = Erysiphe verbasci (on mulleins)
  • Oidium begoniae (=O.cyclaminis, O.lini, O.violae) = Erysiphe polyphaga (on cornsalad, Calluna and Erica)
  • Oidium candicans (= Monilia candicans)
  • Oidium caricae (on papayas)
  • Oidium caricae-papayae (on papayas)
  • Oidium caricicola (on papayas)
  • Oidium chrysanthemi = Erysiphe cichoracearum (on numerous plant species, especially Asteraceae)
  • Oidium carpini
  • Oidium chartarum (= Torula chartarum)
  • Oidium cyparissiae (= Acrosporium cyparissiae) (on cypress)
  • Oidium erysiphoides = Sphaerotheca fuliginea (on melons, watermelons and cucumbers)
  • Oidium euonymi-japonicae (on spindle-trees)
  • Oidium farinosum = Podosphaera leucotricha (on apples)
  • Oidium fructigenum = Monilia fructigena (on Rosaceae)
  • Oidium helichrysi (on strawflowers)
  • Oidium heveae (on rubber tree)
  • Oidium hortensiae = Microsphaera polonica (on bear's breeches and hydrangea)
  • Oidium indicum (on papayas and other tropical fruits)
  • ''Oidium lauracearum (on laurel)
  • Oidium lini ( = Euoidium lini)(on flax)
  • Oidium lycopersicum (on tomatoes)
  • Oidium mangiferae = Erysiphe cichoracearum (on mangos)
  • Oidium monilioides (=O.tritici)= Blumeria graminis (on cereals)
  • Oidium neolycopersici (on tomatoes)
  • Oidium oxalidis = Microsphaera russellii (on sorrels)
  • Oidium papayae (on papayas)
  • Oidium pullorum
  • Oidium sesami
  • Oidium tuckeri = Uncinula necator (on grapes)
    • Oidium albicans has been a parallel name of the yeast Candida albicans (not related to the powdery mildew).Some other species of medical importance previously classified as Oidium include:
  • Oidium cutaneum = Trichosporon cutaneum (cause of some human fungal diseases)
  • Oidium lactis (=Oidium pulmoneum) = Geotrichum candidum (in soil, water and air, also belongs to normal human flora)


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