Holly Fern, Mountain Hollyfern, Mountain Holly Fern, Northern Holly-fern, Northern Holly Fern
Polystichum lonchitis
Synonym: Polypodium lonchitis
A holly fern spotted on the terminal moraine of the Adams Glacier above the head of the Lewis River, Mount Adams Wilderness......July 19, 2018. Note the ouward oriented spines on the leaflets which help identify this species of sword fern.
Paul Slichter