Blechnaceae: Chain Fern Family

Deer Fern: Blechnum spicant (Synonyms: Blechnum spicant ssp. nipponicum, Blechnum spicant var. pensylvanica, Struthiopteris spicant) -

Dennstaedtiaceae: Bracken Family

Western Brackenfern, Bracken Fern, Northern Bracken Fern: Pteridium aquilinum var. pubescens -

Dryopteridaceae: Wood Fern Family

Alpine Ladyfern, American Alpine Lady Fern: Athyrium americanum - ?

Common Ladyfern, Northwestern Ladyfern, Northwestern Lady Fern: Athyrium filix-femina var. cyclosorum (Synonym: Athryium filix-femina ssp. cyclosorum) -

Brittle Bladderfern, Fragile Fern, Brittle Fern, Bladder Fern: Cystopteris fragilis (Synonyms: Cystopteris dicieana, Polypodium fragile) -

Spinulose Woodfern, Toothed Woodfern: Dryopteris carthusiana (Synonyms: Dryopteris austriaca var. spinulosa, Dryopteris spinulosa, Polypodium carthusianum, Polypodium spinulosum) -

Crested Woodfern, Shield Fern: Dryopteris cristata -

Spreading Woodfern, Spreading Wood Fern, Northern Woodfern: Dryopteris expansa (Synonyms: Dryopteris assimilis, Dryopteris dilatata, Dryopteris dilitata var. americana, Nephrodium expansum) -

Male Fern: Dryopteris filix-mas -

Pacific Oakfern, Western Oak Fern: Gymnocarpium disjunctum -

Western Oakfern, Common Oak Fern, Northern Oak Fern: Gymnocarpium dryopteris -

Anderson's Holly-fern, Anderson's Sword Fern, Vancouver Holly Fern: Polystichum andersonii (Synonyms: Polystichum braunii ssp. andersonii, Polystichum braunii var. andersonii) -

Narrow-leaved Sword-fern, Imbricate Sword Fern: Polystichum imbricans ssp. imbricans (Synonym: Polystichum munitum var. imbricans) - ?

Kruckeberg's Holly-fern, Kruckeberg's Sword Fern: Polysticum kruckebergii -

Lemmon's Holly-fern, Shasta Fern: Polysticum lemmonii -

Holly Fern, Mountain Hollyfern, Northern Holly-fern: Polystichum lonchitis (Synonym: Polypodium lonchitis) -

Common Sword Fern, Western Sword Fern: Polystichum munitum (Synonyms: Aspidium munitum, Polystichum munitum var. munitum) -

Mountain Holly-fern, Rock Sword Fern: Polystichum scopulinum -

Oregon Cliff Fern, Western Cliff Fern: Woodsia oregana ssp. oregana -

Rocky Mountain Woodsia, Laurentian Cliff Fern: Woodsia scopulina -

Ophioglossaceae: Adder's-tongue Family

Trianglelobe Moonwort, Upswept Moonwort: Botrichium ascendens -

Scalloped Moonwort, Dainty Moonwort: Botrychium crenulatum -

Western Moonwort: Botrychium hesperium -

Lanceleaf Moonwort, Lanceleaf Grapefern: Botrychium lanceolatum var. lanceolatum -

Slender Moonwort, Narrowleaf Grapefern: Botrychium lineare -

Common Moonwort: Botrychium lunaria -

Michigan Moonwort: Botrychium michiganense -

Mingan Moonwort: Botrychium minganense -

Mountain Moonwort, Western Goblin: Botrychium montanum -

Leather Grapefern, Leathery Grapefern: Sceptridium multifidum (Synonyms: Botrychium californicum, Botrychium coulteri, Botrychium multifidum, Botrychium multifidum ssp. silaifolium Botrychium silaifolium, Osmunda multifida) -

Paradox Moonwort, Peculiar Moonwort, Two-spiked Moonwort: Botrychium paradoxum -

Stalked Moonwort: Botrychium pedunculosum -

Northern Moonwort, Northwestern Moonwort, St. John's Moonwort: Botrychium pinnatum -

Pumice Moonwort, Oregon Grapefern: Botrychium pumicola -

Least Moonwort, Little Grapefern: Botrychium simplex -

Common Grapefern, Rattlesnake Fern, Rattlesnake Grapefern, Virginia Grapefern: Botrychium virginianum (Synonym: Osmunda virginiana) -

Northern Adder's-tongue: Ophioglossum pusillum -

Polypodiaceae: Polypody Family

Irregular Polypody, Pacific Polypody: Polypodium amorphum (Synonym: Polypodium montense) - ?

Licorice Fern: Polypodium glycyrrhiza (Synonyms: Polypodium aleuticum, Polypodium falcatum, Polypodium occidentale, Polypodium vulgare var. falcatum, Polypodium vulgare var. occidentale) -

Western Polypody: Polypodium hesperium (Synonyms: Polypodium prolongilobum, Polypodium vulgare var. columbianum, Polypodium vulgare var. hesperium) -

Pteridaceae: Maidenhair Family

Aleutian Maidenhair, Northern Maidenhair, Western Maidenhair: Adiantum aleuticum var. aleuticum (Synonyms: Adiantum boreale, Adiantum pedatum, Adiantum pedatum var. aleuticum, Adiantum pedatum var. subpumilum) -

Indian's Dream, Oregon Cliff Brake, Podfern: Aspidtotis densa (Synonyms: Cheilanthes siliquosa, Cryptogramma densa, Onychium densum, Pellaea densa) -

Fee's Lipfern, Fee's Lip Fern, Slender Fern, Fee's Lace-fern: Cheilanthes feei (Synonym: Myriopteris gracilis) -

Lace Lipfern, Lace Fern: Cheilanthes gracillima (Synonym: Myriopteris gracillima) -

American Rockbrake, American Parsley Fern: Cryptogramma acrostichoides (Synonyms: Cryptogramma crispa ssp. acrostichoides, Cryptogramma crispa var. acrostichoides) -

Cascade Rockbrake, Cascade Parsley Fern: Cryptogramma cascadensis -

Fragile Rockbrake, Slender Rockbrake, Steller's Rockbrake: Cryptogramma stelleri (Synonym: Pteris stelleri) -

Sierra Cliffbrake: Pellaea brachyptera - ?

Brewer's Cliffbrake: Pellaea breweri -

Bridges' Cliffbrake: Pellaea bridgesii -

Smooth Cliffbrake, Simple Cliffbrake: Pellaea glabella ssp. simplex -

Gold-back Fern, Gold Fern: Pentagramma triangularis ssp. triangularis (Synonym: Pityrogramma triangularis) -