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The Arthoniaceae are a family of lichenized fungi in the order Arthoniales.[1] Species have a widespread distribution, but are especially prevalent in tropical areas. Collectively, the family has a highly variable ecology, some species lichenized with green algae, and others lichenicolous—growing on other lichens. Species can grow on leaves, bark and rock.[2] The genus was first described by Heinrich Gottlieb Ludwig Reichenbach in 1841.


Herbarium specimen of Arthonia radiata (magnified 40x) showing roughly star-shaped clusters of ascomata. Found growing on the bark of red oak.


  1. ^ Encyclopedia of Life, consulted at september the seventeenth 2013
  2. ^ Cannon PF, Kirk PM. (2007). Fungal Families of the World. Wallingford, UK: CAB International. pp. 17–18. ISBN 978-0-85199-827-5. 


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