Hair Ice, associated with the fungus Exidiopsis effusa

Hair Ice, associated with the fungus Exidiopsis effusa in East Sussex England

 

Hair ice crystals form on rotting wood on humid winter nights, when the temperature drops below freezing. More amazing is the fact that these candy floss-like wisps are caused by the presence of a fungus, Exidiopsis effusa, within the rotting wood. It is thought the fungi prevents the small ice crystals from recrystallizing into larger ones, maintaining the distinctive hair-like shape

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