[CoL] Catalogue of Life
Bánki, O., Roskov, Y., Döring, M., Ower, G., Hernández Robles, D. R., Plata Corredor, C. A., Stjernegaard Jeppesen, T., Örn, A., Vandepitte, L., Hobern, D., Schalk, P., DeWalt, R. E., Ma, K., Miller, J., Orrell, T., Aalbu, R., Abbott, J., Adlard, R., Aedo, C., et al. (2024). Catalogue of Life Checklist (Version 2024-03-26); https://doi.org/10.48580/dfz8d
[TFG]; Wherry, 1995
The Fern Guide: Northeasten and Midland United States and Adjacent Canada
Fern Guide
[TSF]; Thommen, 1951
Taschenatlas der Schweizer Flora
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Markku Savela
Keep in mind that the taxonomic information is copied from various sources, and may include many inaccuracies. Expert help is welcome.