DR KEITH WHEELER / SCIENCE PHOTO LIBRARY DR KEITH WHEELER / SCIENCE PHOTO LIBRARY
Death cap fungi (Amanita phalloides) at the base of a beech tree (Fagus sp., not seen) The mycelium of the death cap fungus shares a symbiotic relationship with the beech, forming a mycorrhizal sheath around the roots of the tree. This is a mutualistic relationship, with the fungus helping its host to extract nutrients and water from the soil, in return for sugars via the plant's photosynthesis. This fungus is deadly poisonous. The genus Amanita is recognised by their volva and universal veil.
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