Sphaerophorus is a genus of lichenized fungi in the order Lecanorales.
Members of Sphaerophorus are commonly called ball lichens,Ball Lichen (Sphaerophorus), Encyclopedia of LifeUSDA Natural Resources Conservation Service Name Search coral lichens,Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, or tree coral.
According to the Dictionary of the Fungi (10th edition, 2008), the widespread genus contains eight species.
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