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Dryopteris cristata (L.) Gray Aspidium cristatum (L.) Sw.; Polypodium
cristatum L.
Dryopteris ×dowellii (Farw.) Wherry Dryopteris clintoniana × D. intermedia
crested wood fern
Dryopteris filix-mas (L.) Schott ssp. Polypodium filix-mas L. male wood fern
brittonii Fras.-Jenk. & Widen
Dryopteris fragrans (L.) Schott Polypodium fragrans L. fragrant wood fern
Dryopteris goldiana (Hook. ex Aspidium goldianum Hook. ex Goldie Goldie's wood fern
Goldie) Gray
Dryopteris goldiana × D. intermedia
Dryopteris intermedia (Muhl. ex Aspidium intermedium Muhl. ex Gray; evergreen wood fern
Willd.) Gray
Dryopteris austriaca (Jacq.) Woynar ex Schinz
& Thellung var. intermedia (Muhl. ex Willd.)
Morton; Dryopteris spinulosa (O.F. Muell.)
Watt var. intermedia (Muhl. ex Willd.)
Underwood
Dryopteris intermedia × D.
marginalis
Dryopteris marginalis (L.) Gray Polypodium marginale L. marginal wood fern
Dryopteris ×mickelii Peck Dryopteris clintoniana × D. goldiana
Dryopteris ×montgomeryi Fras.-Jenk. Dryopteris filix-mas × D. marginalis
& Widen
Dryopteris ×neowherryi W.H. Dryopteris goldiana × D. marginalis
Wagner
Dryopteris ×pittsfordensis Slosson Dryopteris carthusiana × D. marginalis
Dryopteris ×slossoniae Wherry ex Dryopteris cristata × D. marginalis
Lellinger
Dryopteris ×triploidea Wherry Dryopteris carthusiana × D. intermedia ;
Dryopteris spinulosa (O.F. Muell.) Watt var.
fructuosa (Gilbert) Trudell
Dryopteris ×uliginosa (A. Braun ex Dryopteris carthusiana × D. cristata
Dowell) Druce
Polystichum acrostichoides (Michx.) Nephrodium acrostichoides Michx. Christmas fern
Schott
Polystichum braunii (Spenner) Fée Aspidium braunii Spenner; Polystichum Braun's holly fern
braunii ssp. purshii (Fern.) Calder & Taylor;
Polystichum braunii var. purshii Fern.
Polystichum ×potteri Barrington Polystichum acrostichoides × P. braunii
Equisetaceae
horsetail family
Equisetum arvense L. Equisetum arvense var. boreale (Bong.) Rupr. field horsetail
Equisetum ×ferrissii Clute
Equisetum hyemale × E. laevigatum A. Braun;
Hippochaete ×ferrissii (Clute) Skoda & Holub
Equisetum fluviatile L. Equisetum limosum L. river horsetail
Equisetum hyemale L. ssp. affine Equisetum hyemale var. robustum (A. Braun) tall scouring-rush
(Engelm.) Calder & Taylor
A.A. Eat.; Hippochaete hyemalis (L.) Bruhin
ssp. affinis (Engelm.) Holub