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ReferencesEdit

  1. ^ Bubrick, P.; Galun, M.; Frensdorff, A. (1984). "Observations on free-living Trebouxia De Puymaly and Pseudotrebouxia Archibald, and evidence that both symbionts from Xanthoria parietina (L.) Th. Fr. can be found free-living in nature". New Phytologist. 97 (3): 455–462. doi:10.1111/j.1469-8137.1984.tb03611.x. ISSN 0028-646X. 

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