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fieldmuseum.org
archive.fieldmuseum.org
Lumbsch TH, Huhndorf SM (December 2007). "Outline of Ascomycota – 2007". Myconet. 13. Chicago, USA: The Field Museum, Department of Botany: 1–58. Archived from the original on March 18, 2009.
Raja HA, Shearer CA (2006). "Jahnula species from North and Central America, including three new species". Mycologia. 98 (2): 319–32. doi:10.3852/mycologia.98.2.319. PMID16894977.
web.archive.org
Lumbsch TH, Huhndorf SM (December 2007). "Outline of Ascomycota – 2007". Myconet. 13. Chicago, USA: The Field Museum, Department of Botany: 1–58. Archived from the original on March 18, 2009.