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This northern fern shows a preference for limestone-influenced areas and differs from its relatives in having fronds distributed along an extended rhizome. This is a close view of fronds from a plant on the east side of Glacier National Park.
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This northern fern shows a preference for limestone-influenced areas and differs from its relatives in having fronds distributed along an extended rhizome. This is a higher-resolution display of part of the companion image IM09-3577.
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This northern fern shows a preference for limestone-influenced areas and differs from its relatives in having fronds distributed along an extended rhizome.
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This is a close view taken at home of the underside of a frond and shows developing sporangia and the scaly midrib. Both Polystichum lonchitis and P. munitum were growing in the same vicinity.
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