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btotl

apparent bad garden fungi?

Question

I have a few plants with these guys popping up and am told they bring disease?? Sorry for bad photos just had some rain and they have fallen over.

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post-5995-0-84379100-1324686066_thumb.jp

post-5995-0-16416900-1324686151_thumb.jp

post-5995-0-51921800-1324685995_thumb.jpg

post-5995-0-84379100-1324686066_thumb.jpg

post-5995-0-16416900-1324686151_thumb.jpg

post-5995-0-51921800-1324685995_thumb.jpg

post-5995-0-84379100-1324686066_thumb.jpg

post-5995-0-16416900-1324686151_thumb.jpg

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Have you noticed any disease symptoms in the surrounding plants - wilting, yellowing or leaf drop etc ?

Most fungi are a beneficial part of the soils ecology and play in important role in the soil.

One of the most common parasitic fungi that causes real problems is Armillaria mellea which can cause real problems in any garden.

That doesn't look like Amillaria to me so unless you see any sick plants you should be OK.

Armillaria mellea

235px-Armillaria.jpg180px-Armillaria_mellea_041031w.jpg

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yes there is yellowing and slight leaf drop.

Deff doesnt look like Armillaria.

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Who told you that? Coprinoids are not known to be pathogenic and are all saprotrophic. What you have there appears to be a Parasola species and as such is nothing to worry about. As SallyD said, is likely to actually be beneficial, as the fungus liberates nutrients as it breaks down organic materials, thus making it available for uptake by the plants.

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They are black though?

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The black is a result of them deliquescing (auto-digesting), a feature of all coprinoids. It's the way they have evolved spore dispersal. Instead of forcibly ejecting spores like other mushrooms (though they may do that initially), they deliquesce, thus turning themselves into a liquid spore slurry, which is then distributed by organisms such as slugs.

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