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Polystichum braunii Uncoiling frond of Polystichum braunii found growing on duff and soil covered boulders in an ephemeral stream that flows between an old growth Sugar Maple forest and a tall (~90 meters from the base) north facing basalt bluff. Braun's Holly Fern,Geotagged,Minnesota,Polystichum braunii,Spring,United States,ephemeral stream Click/tap to enlarge Promoted

Polystichum braunii

Uncoiling frond of Polystichum braunii found growing on duff and soil covered boulders in an ephemeral stream that flows between an old growth Sugar Maple forest and a tall (~90 meters from the base) north facing basalt bluff.

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Leaves (fronds) are evergreen, up to 40 inches long and 8 inches wide, twice compound, lance-elliptic in outline, widest at about the middle, tapering to a pointed tip and gradually tapering at the base, with branches (pinnae) all along the stem nearly all the way to the ground, the lowest pinnae very short. Pinnae are up to 4 inches long, mostly lance-oblong in outline with 9 to 15 pairs of leaflets (pinnules).

Pinnules are sharply toothed, the teeth with bristled tips and curved up.. more

Similar species: Polypodiales
Species identified by Gary B
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By Gary B

All rights reserved
Uploaded May 31, 2019. Captured May 28, 2019 09:48 in Superior Hiking Trail Leveaux Mountain Loop, Tofte, MN 55615, USA.
  • Canon EOS Rebel T6
  • f/13.0
  • 1/197s
  • ISO800
  • 29mm