Hyphae and asci of Sphaerotheca mildew

Hyphae and asci of Sphaerotheca mildew

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Caption: Mildew. Coloured Scanning Electron Micrograph of hyphae and ripe asci of the leaf mildew Sphaerotheca sp. The hyphae are the tangled filaments which make up a fungal colony. Asci (singular ascus) are the aerial, club-shaped spore-forming bodies seen here. Inside an ascus, eight ascospores develop and are violently discharged when ripe. The ascospores are carried away by air currents and may produce a new fungal colony if they land on appropriate material. Sphaerotheca species are plant parasites, various species invading the leaves and buds of dandelions, hops, gooseberries and roses. Magnification: x300 at 5x7cm size. x1950 at 10x8".

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Keywords: ascus, cleistothecium, eumycota, fungal, fungi, fungus, leaf mildew, mildew, mycology, nature, naturemycology, parasite, plant, plant parasite, scanning electron micrograph, sem, sphaerotheca, sphaerotheca sp., type

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