| 21. | It was circumscribed by American mycologist William Alphonso Murrill in 1905.
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| 22. | The genus was circumscribed by mycologist J . Eriksson in 1958.
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| 23. | It was first described by Norwegian mycologist Leif Ryvarden in 1975.
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| 24. | It was first described by Finnish mycologist Petter Karsten in 1879.
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| 25. | The genus was circumscribed by French mycologist Lucien Qu�let in 1883.
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| 26. | Mains'lineage of North American mycologists is large and widespread.
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| 27. | The genus was circumscribed in 2000 by Estonia mycologist Erast Parmasto.
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| 28. | It was circumscribed by Canadian mycologist Mildred Katherine Nobles in 1967.
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| 29. | It was described by mycologist Josef Adolf von Arx in 1971.
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| 30. | It was described in 1958 by Canadian mycologist Stanley John Hughes.
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