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Related to Oidium: Thamnidium


One of the small, thin-walled spores with flat ends produced by autofragmentation of the vegetative hyphae in certain Eumycetes.



a small cell into which the hypha of the mycelium of certain imperfect and club fungi disintegrates. The oidium functions as a spore for vegetative reproduction. In heterothallic club fungi, the oidium performs the function of a spermatium in diploidization of the mycelium.

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The disease is caused by a fungus called Oidium Mangiferae and its germs appears as white powder that can easily be identified by farmers on the leaf, soft branches and flowers.