Accepted By:
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Frye, T. C. & L. Clark. 1937. Hepaticae of North America. Part I. Univ. Wash. Publ. Biol. 6: 1–162.
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Stotler, R. E. & B. J. Crandall-Stotler. 1977. A checklist of the liverworts and hornworts of North America. Bryologist 80: 405–428.
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Stotler, R. E. & B. J. Crandall-Stotler. 2017. A synopsis of the liverwort flora of North America north of
Mexico. Ann. Missouri Bot. Gard. 102(4): 574–709.
 
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