Polypodiaceae
Polypodium

Polypodium × incognitum Cusick

First published in Amer. Fern J. 92: 241 (2002)
This hybrid is accepted
The native range of this hybrid is E. Canada to NE. U.S.A. It is a rhizomatous geophyte and grows primarily in the temperate biome. The hybrid formula is P. appalachianum × P. virginianum.

Distribution

Native to:

New York, Ohio, Ontario

Classification

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Publications

POWO follows these authorities in accepting this name:

  • Roskov Y. & al. (eds.) (2018). World Ferns: Checklist of Ferns and Lycophytes of the World. Species 2000 & ITIS Catalogue of Life Naturalis, Leiden, the Netherlands.
  • Werier, D. (2017). Catalogue of the Vascular plants of New York state. Memoirs of the Torrey Botanical Club 27: 1-542.

Kew Backbone Distributions

  • Werier, D. (2017). Catalogue of the Vascular plants of New York state. Memoirs of the Torrey Botanical Club 27: 1-542.
  • iNaturalist.org (2019-countinuously updated). iNaturalist Research-grade Observations. Occurrence dataset http://www.inaturalist.org.

Other Data

Other Kew resources that provide information on this taxon:

Sources

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Science Photographs

    • Copyright applied to individual images