| Oidium | |
|---|---|
 | |
| Spores of the Oidium anamorph of Microsphaera penicillata | |
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Leotiomycetes |
| Order: | Erysiphales |
| Family: | Erysiphaceae |
| Genus: | Oidium Link (1824) |
| Type species | |
| Oidium monilioides (Nees) Link (1824) | |
| Synonyms [1] | |
Oidium is a former genus of Ascomycetes, where many species of the family Erysiphaceae were located. Oidium is no longer an accepted genus as almost all species have been transferred to other genera. Oidium sensu stricto is now Blumeria . Most of them are plant pathogens causing different forms of powdery mildew, for example:
- Oidium alphitoides = Erysiphe alphitoides (on oaks)
- Oidium anacardii = Erysiphe quercicola (on cashew)
- Oidium arachidis = Erysiphe pisi (on peanut)
- Oidium asteris-punicei = Golovinomyces asterum (on mangos)
- Oidium balsamii = Golovinomyces verbasci (on mulleins)
- Oidium begoniae (=O.cyclaminis, O.lini, O.violae) = Erysiphe polyphaga (on Valerianella , Calluna and Erica )
- Oidium candicans = Botryobasidium candicans/capitatum
- Oidium caricae = Erysiphe diffusa (on papayas)
- Oidium caricae-papayae (on papayas)
- Oidium caricicola = Podosphaera caricicola (on papayas)
- Oidium chrysanthemi = Golovinomces chrysanthemi Chrysanthemum )
- Oidium carpini = Erysiphe arcuata
- Oidium chartarum = Stachybotrys chartarum
- Oidium cyparissiae = Fibroidium cyparissiae (on Euphorbia cyparissias )
- Oidium erysiphoides = Podosphaera fuliginea
- Oidium euonymi-japonicae = Erysiphe euonymicola (on spindle-trees)
- Oidium farinosum = Podosphaera leucotricha (on apples)
- Oidium fructigenum = Monilia fructigena (on Rosaceae)
- Oidium helichrysi = Euoidium helichrysi (on strawflowers)
- Oidium heveae (on rubber tree)
- Oidium hortensiae = Pseudoidium hortensiae (on hydrangea)
- Oidium indicum (on papayas and other tropical fruits)
- Oidium lauracearum = Erysiphe lauracearum (on laurel)
- Oidium lini = Euoidium lini (on flax)
- Oidium lycopersicum = Golovinomyces lycopersici (on tomatoes)
- Oidium mangiferae = Erysiphe quercicola
- Oidium manihotis
- Oidium monilioides = Blumeria graminis, Blumeria bulbigera (on cereals and grasses)
- Oidium neolycopersici = Erysiphe neolycopersici (on tomatoes)
- Oidium oxalidis = Erysiphe russellii (on sorrels)
- Oidium papayae (on papayas)
- Oidium pullorum
- Oidium sesami
- Oidium tingitaninum = Fibroidium tingitaninum
- Oidium tuckeri = Erysiphe necator (on grapes)
Oidium albicans has been a parallel name of the yeast Candida albicans (not related to the powdery mildews).
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)
