Powdery mildew, Erysiphe

Powdery mildew, Erysiphe

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Caption: Powdery mildew. Scanning Electron Micrograph (SEM) of hyphae and a round cleistocarp "fruiting body" of the powdery mildew Erysiphe galeopsidis, on a red deadnettle plant. Hyphae are the tangled filaments which make up a fungal colony. The round cleistocarp contains several asci which are spore-bearing bodies. These asci produce ascospores that will be discharged into the air when the cleistocarp is ripe. The ascospores are carried away by air currents and can produce a new fungal colony. Powdery mildew Erysiphe sp. parasitize leaves of wheat, corn, and the red deadnettle. Magnification: x640 at 7x10 inch size.

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Keywords: cleistocarp, deadnettle, erysiphe, erysiphe galeopsidis, eumycota, fungal, fungi, fungus, mildew, mycology, nature, naturemycology, nettle, plant parasite, powdery mildew, scanning electron micrograph, sem, type

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