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Wildflowers, Ferns, Grasses, Trees and Shrubs (18 Galleries)
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Ferns and fern allies;Mosses and Liverworts; Lichens of the Ottawa area
> Marsh fern (
Thelypteris palustris
) sori
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Christine Hanrahan
Marsh fern (
Thelypteris palustris
) sori
The sori are very distinctive on many species of ferns and help to identify them as to species.
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