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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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Image taken during Jepson workshop: Mojave Flora with Bruce Baldwin, James Andre, and Tasha LaDoux
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This is a flatbed scan of the underside of a fresh frond, with a magnified inset of one part of the same frond at bottom right.
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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.