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Botanical Research Institute of Texas (BRIT)
Brown University (BRU)
Drexel University (PH)
Duke University (DUKE)
Field Museum of Natural History Pteridophyte Collection (F)
Indiana University (IND)
Miami University, Willard Sherman Turrell Herbarium (MU)
Missouri Botanical Garden (MO)
Museum of Northern Arizona (MNA)
New York Botanical Garden (NYBG)
Ohio University, Bartley Herbarium (BHO)
Rutgers University, Chrysler Herbarium (CHRB)
University and Jepson Herbaria (UC/JEPS)
University of Alaska (ALA)
University of Louisiana at Monroe Herbarium (NLU)
University of Michigan (MICH)
University of North Carolina, Chapel Hill (extant) (NCU)
University of Vermont (VT)
University of Vermont, Pringle Herbarium, New England vascular plants (VT)
University of Wisconsin-Madison, Wisconsin State Herbarium (WIS-Pteridophyte)
Vanderbilt University Herbarium (VDB)
iNaturalist Fern Observations (iNaturalist)
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