Equisetum arvense | Common Horsetail | Polypodiopsida | Equisetaceae | C |
Equisetum fluviatile | Swamp Horsetail | Polypodiopsida | Equisetaceae | C |
Equisetum hyemale affine | Tall Scouring-Rush, Western Scouringrush | Polypodiopsida | Equisetaceae | C |
Equisetum laevigatum | Smooth Scouring-Rush | Polypodiopsida | Equisetaceae | C |
Equisetum palustre | Marsh Horsetail | Polypodiopsida | Equisetaceae | C |
Equisetum pratense | Meadow Horsetail | Polypodiopsida | Equisetaceae | C |
Equisetum scirpoides | Dwarf Scouring-Rush | Polypodiopsida | Equisetaceae | C |
Equisetum sylvaticum | Wood Horsetail | Polypodiopsida | Equisetaceae | C |
Equisetum telmateia braunii | Giant Horsetail | Polypodiopsida | Equisetaceae | TBD |
Equisetum variegatum | Northern Scouring-Rush | Polypodiopsida | Equisetaceae | C |
Equisetum x ferrissii | Ferriss's Scouring-Rush, Ferriss's Horsetail | Polypodiopsida | Equisetaceae | C |
Botrychium ascendens | Upswept Moonwort | Polypodiopsida | Ophioglossaceae | TBD |
Botrychium crenulatum | Dainty Moonwort | Polypodiopsida | Ophioglossaceae | C |
Botrychium hesperium | Western Moonwort | Polypodiopsida | Ophioglossaceae | C |
Botrychium lanceolatum lanceolatum | Triangle Moonwort, Lanceleaf Moonwort | Polypodiopsida | Ophioglossaceae | C |
Botrychium michiganense | Michigan Moonwort | Polypodiopsida | Ophioglossaceae | C |
Botrychium minganense | Mingan Moonwort | Polypodiopsida | Ophioglossaceae | C |
Botrychium montanum | Mountain Moonwort, Western Goblin | Polypodiopsida | Ophioglossaceae | TBD |
Botrychium neolunaria | Common Moonwort | Polypodiopsida | Ophioglossaceae | C |
Botrychium pinnatum | Northwestern Moonwort | Polypodiopsida | Ophioglossaceae | C |
Botrypus virginianus | Rattlesnake Fern | Polypodiopsida | Ophioglossaceae | C |
Ophioglossum pusillum | Northern Adder's-Tongue | Polypodiopsida | Ophioglossaceae | TBD |
Sceptridium multifidum | Leathery Grape Fern, Leathery Grapefern | Polypodiopsida | Ophioglossaceae | C |
Asplenium trichomanes | Maidenhair Spleenwort | Polypodiopsida | Aspleniaceae | TBD |
Asplenium viride | Green Spleenwort | Polypodiopsida | Aspleniaceae | TBD |
Athyrium distentifolium | Alpine Lady Fern, Alpine Lady-Fern | Polypodiopsida | Athyriaceae | C |
Athyrium filix-femina cyclosporum | Lady Fern | Polypodiopsida | Athyriaceae | C |
Cystopteris fragilis | Fragile Fern | Polypodiopsida | Cystopteridaceae | C |
Gymnocarpium disjunctum | Western Oak Fern, Pacific Oak Fern | Polypodiopsida | Cystopteridaceae | C |
Gymnocarpium dryopteris | Oak Fern | Polypodiopsida | Cystopteridaceae | C |
Pteridium aquilinum | Bracken Fern | Polypodiopsida | Dennstaedtiaceae | C |
Dryopteris carthusiana | Toothed Wood Fern | Polypodiopsida | Dryopteridaceae | C |
Dryopteris cristata | Crested Wood Fern | Polypodiopsida | Dryopteridaceae | C |
Dryopteris expansa | Spiny Wood Fern, Spreading Wood Fern | Polypodiopsida | Dryopteridaceae | C |
Dryopteris filix-mas | Male Fern | Polypodiopsida | Dryopteridaceae | C |
Polystichum braunii | Braun's Holly Fern, Braun's Hollyfern | Polypodiopsida | Dryopteridaceae | P |
Polystichum kruckebergii | Kruckeberg's Hollyfern | Polypodiopsida | Dryopteridaceae | TBD |
Polystichum lonchitis | Northern Holly Fern | Polypodiopsida | Dryopteridaceae | C |
Polystichum munitum | Western Sword Fern | Polypodiopsida | Dryopteridaceae | C |
Matteuccia struthiopteris | Ostrich Fern | Polypodiopsida | Onocleaceae | TBD |
Polypodium hesperium | Western Polypody | Polypodiopsida | Polypodiaceae | C |
Adiantum aleuticum | Northern Maiden-Hair, Western Maidenhair Fern | Polypodiopsida | Pteridaceae | TBD |
Aspidotis densa | Dense Lace Fern | Polypodiopsida | Pteridaceae | TBD |
Cryptogramma acrostichoides | Parsley Fern, American Parsley Fern | Polypodiopsida | Pteridaceae | C |
Cryptogramma stelleri | Slender Rock-Brake, Steller's Rock-Brake | Polypodiopsida | Pteridaceae | P |
Pellaea glabella simplex | Simple Cliff-Brake, Simple Cliffbrake | Polypodiopsida | Pteridaceae | P |
Woodsia oregana oregana | Western Cliff Fern, Oregon Woodsia | Polypodiopsida | Woodsiaceae | C |
Woodsia scopulina | Mountain Cliff Fern | Polypodiopsida | Woodsiaceae | C |
Marsilea vestita | Hairy Water-Clover | Polypodiopsida | Marsileaceae | C |
Azolla filiculoides | Large Mosquito Fern, Water Fern | Polypodiopsida | Salviniaceae | C |
Azolla microphylla | Mexican Mosquito Fern | Polypodiopsida | Salviniaceae | C |
Isoetes howellii | Howell's Quillwort | Lycopodiopsida | Isoetaceae | P |
Isoetes maritima | Coastal Quillwort, Maritime Quillwort | Lycopodiopsida | Isoetaceae | TBD |
Isoetes nuttallii | Nuttall's Quillwort | Lycopodiopsida | Isoetaceae | C |
Isoetes occidentalis | Western Quillwort | Lycopodiopsida | Isoetaceae | P |
Isoetes tenella | Spiny-spore Quillwort | Lycopodiopsida | Isoetaceae | TBD |
Isoetes x marensis | Mara Lake Quillwort | Lycopodiopsida | Isoetaceae | P |
Dendrolycopodium dendroideum | Ground-Pine, Prickly Tree-Clubmoss | Lycopodiopsida | Lycopodiaceae | C |
Diphasiastrum alpinum | Alpine Club-Moss, Alpine Clubmoss | Lycopodiopsida | Lycopodiaceae | TBD |
Diphasiastrum complanatum | Ground-Cedar | Lycopodiopsida | Lycopodiaceae | C |
Huperzia sp. | Temperate firmoss | Lycopodiopsida | Lycopodiaceae | TBD |
Lycopodiella inundata | Bog Clubmoss | Lycopodiopsida | Lycopodiaceae | C |
Lycopodium clavatum | Running Clubmoss, Stag's-Horn Clubmoss | Lycopodiopsida | Lycopodiaceae | C |
Lycopodium lagopus | Ptarmigan Club-Moss, One-cone Clubmoss | Lycopodiopsida | Lycopodiaceae | C |
Spinulum annotinum | Stiff Clubmoss, Interrupted Clubmoss | Lycopodiopsida | Lycopodiaceae | C |
Selaginella densa | Compact Selaginella, Dense Spikemoss | Lycopodiopsida | Selaginellaceae | C |
Selaginella wallacei | Wallace's Selaginella | Lycopodiopsida | Selaginellaceae | C |