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Category: Polypodiophyta

Polypodium amorphum

January 29, 2022 Dan Nelson 4 Comments

Thanks to a tip from Ash Gill, who kindly provided not only excellent directions complete with distances and verifiable landmarks…

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Posted in: Plants, Polypodiaceae, Polypodiophyta, Polypodiopsida, Polypodium, Species Profiles, Tracheophytes Filed under: Polypodium amorphum

Pteridium aquilinum (Bracken Fern)

January 8, 2022 Dan Nelson 2 Comments

So, here is part three of my series on distinguishing between some of the large pinnate ferns of our region.…

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Posted in: Dennstaedtiaceae, Plants, Polypodiales, Polypodiophyta, Polypodiopsida, Pteridium, Species Profiles, Tracheophytes Filed under: Bracken Fern, Pteridium aquilinum

Dryopteris expansa

January 7, 2022 Dan Nelson 2 Comments

This is part 2 of my 3 part series on large, pinnate ferns commonly found in proximity to each other…

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Posted in: Dryopteridaceae, Dryopteris, Plants, Polypodiales, Polypodiophyta, Polypodiopsida, Species Profiles, Tracheophytes Filed under: Dryopteris expansa

Athyrium filix-femina (Lady Fern)

January 6, 2022 Dan Nelson 5 Comments

Over the next few days I’ll be doing comparison profiles for 3 large, pinnate ferns that are commonly found in…

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Posted in: Athyriaceae, Athyrium, Plants, Polypodiales, Polypodiophyta, Polypodiopsida, Species Profiles, Tracheophytes Filed under: Athyrium filix-femina, Lady Ferns

Azolla filiculoides

September 6, 2021 Dan Nelson 6 Comments

Although I had read about these interesting, and rather beautiful, tiny ferns in the family Salviniaceae (water ferns), I had…

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Posted in: Azolla, Plants, Polypodiophyta, Polypodiopsida, Salviniaceae, Salviniales, Species Profiles, Tracheophytes Filed under: Azolla filiculoides, Duckweed Fern, Pacific Mosquito Fern

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