Dryopteris campylopteraClarkson

mountain woodfern

WFO wfo-0001107297 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Dryopteris campyloptera, photographed by Jim Bennett
fig. a Jim Bennett, CC0 1.0 / 2022-06-06 / obs. 203889790
Dryopteris campyloptera, photographed by Lynn Harper
fig. b Lynn Harper, CC0 1.0 / obs. 164286889
Dryopteris campyloptera, photographed by Steven Lamonde
fig. c Steven Lamonde, CC BY 4.0 / obs. 157989452
Dryopteris campyloptera, photographed by Lynn Harper
fig. d Lynn Harper, CC0 1.0 / obs. 155357427
Dryopteris campyloptera, photographed by Lynn Harper
fig. e Lynn Harper, CC0 1.0 / obs. 155358331
Dryopteris campyloptera, photographed by Lynn Harper
fig. f Lynn Harper, CC0 1.0 / obs. 155356695
Dryopteris campyloptera, photographed by Lynn Harper
fig. g Lynn Harper, CC0 1.0 / obs. 153018048
Dryopteris campyloptera, photographed by Ken Kneidel
fig. h Ken Kneidel, CC0 1.0 / obs. 134640487

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 20 botanical countries

Regions where Dryopteris campyloptera is native: Alabama, Connecticut, Labrador, Maine, Maryland, Massachusetts, Michigan, New Brunswick, New Hampshire, New York, Newfoundland, North Carolina, Nova Scotia, Pennsylvania, Prince Edward I., Québec, Tennessee, Vermont, Virginia, West Virginia AlabamaConnecticutLabradorMaineMarylandMassachusettsMichiganNew BrunswickNew HampshireNew YorkNewfoundlandNorth CarolinaNova ScotiaPennsylvaniaPrince Edward I.QuébecTennesseeVermontVirginiaWest Virginia
Native distribution of Dryopteris campyloptera, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows.
RegionTDWG codeContinent
Alabama ALA NORTHERN AMERICA
Connecticut CNT
Labrador LAB
Maine MAI
Maryland MRY
Massachusetts MAS
Michigan MIC
New Brunswick NBR
New Hampshire NWH
New York NWY
Newfoundland NFL
North Carolina NCA
Nova Scotia NSC
Pennsylvania PEN
Prince Edward I. PEI
Québec QUE
Tennessee TEN
Vermont VER
Virginia VRG
West Virginia WVA

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 22 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Aspidium campylopterum Kunze
  • Aspidium spinulosum var. americanum Fischer ex Kunze
  • Aspidium spinulosum var. concordianum Eastman
  • Dryopteris austriaca var. concordiana (Davenp.) C.V.Morton
  • Dryopteris dilatata subsp. americana (Fisch. ex Kunze) Hultén
  • Dryopteris dilatata subsp. campyloptera (Clarkson) C.V.Morton
  • Dryopteris dilatata var. americana (Fisch. ex Kunze) Benedict
  • Dryopteris intermedia f. concordiana (Davenp.) Clute
  • Dryopteris intermedia var. concordiana (Davenp.) M.Broun
  • Dryopteris spinulosa var. americana Fernald
  • Dryopteris spinulosa var. concordiana (Davenp.) Eastman
  • Filix spinulosa var. americana (Fisch. ex Kunze) Farw.
  • Filix spinulosa var. americana Farw.
  • Filix spinulosa var. concordiana Farw.
  • Filix-mas rigida var. americana Farw.
  • Filix-mas spinulosa var. americana (Fisch.) Farw.
  • Filix-mas spinulosa var. americana (Fisch. ex Kunze) Farw.
  • Nephrodium spinulosum f. concordianum (Davenp.) Clute
  • Nephrodium spinulosum var. concordianum Davenp.
  • Thelypteris dilatata var. americana (Fisch.) House
  • Thelypteris spinulosa var. americana Weath.
  • Thelypteris spinulosa var. concordiana Weath.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.