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Polystichum acrostichoides var. lonchitoides

Polystichum calderonense

Polytrichastrum alpinum var. alpinum

Pogonatum alpinum

Pogonatum alpinum var. macounii

Polytrichum alpinum var. macounii

Polytrichastrum alpinum var. septentrionale

Pogonatum macounii

Polytrichastrum alpinum var. fragile

Polytrias indica

Polystichum lonchitis

Northern hollyfern

Polystichum munitum

Common sword fern

Polytaenia nuttallii

Prairie-parsley

Polystichum californicum

Polytrichum commune var. commune

Polytrichum formosum

Polytrichum attenuatum

Polytrichum longisetum

Polytrichum gracile

Polytrichum ohioense