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Dryopteris celsa (W. Palmer) Knowlton, W. Palmer, & Pollard. Log Fern. Phen: Jun-Sep. Hab: Swamps, seepage bogs, and calcareous floodplains, typically associated with calcareous substrates. Dist: Ne. NJ and ne. NY west to s. IL, e. MO, and AR, south to SC, GA, n. AL, TN, e. and n. LA, and e. TX (Mink, Singhurst, & Holmes 2011a); disjunct in w. NY and w. MI; overall very scattered in its distribution. Discovered in MS by John Kees (Kees & Weakley 2018).

Origin/Endemic status: Native

Taxonomy Comments: This species is a fertile allotetraploid derived from hybridization of D. goldiana and D. ludoviciana; its chromosome complement is symbolized GGLL (Werth 1991).

Synonymy ⓘ: = Ar, C, ETx1, F, FNA2, Il, K1, K3, K4, Mo1, NY, Pa, RAB, Tn, TxFerns, Va, W, WV, Montgomery & Paulton (1981); = Dryopteris ×celsa (W.Palmer) Knowlt., W.Palmer, & Pollard – Tat; = Dryopteris goldiana (Hook. ex Goldie) A.Gray ssp. celsa W.Palmer – G; > Dryopteris atropalustris Small – Sf; > Dryopteris celsa (W.Palmer) Knowlt., W.Palmer, & Pollard – Sf; >< Dryopteris cristata (L.) A.Gray – Tx, misidentification

Links to other floras: = Dryopteris celsa - FNA2

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FAC
  • Eastern Mountains and Piedmont: OBL
  • Great Plains: OBL
  • Midwest: OBL
  • Northcentral & Northeast: OBL

Heliophily ⓘ: 2

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image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Richard & Teresa Ware CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Alan Cressler: Dryopteris celsa, Fort Yargo State Park, Barrow County, Georgia 3 by Alan Cressler source | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Gary P. Fleming | Original Image ⭷
image of plant© Alan M. Cressler | Original Image ⭷
image of plant© Alan Cressler: Dryopteris celsa (left), Dryopteris Xseparabilis (center), Dryopteris intermedia (right), Big Creek, Great Smoky Mountains National Park, Haywood County, North Carolina 1 by Alan Cressler source | Original Image ⭷

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Horticultural Information

NCBG trait

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Height: 2-4 ft.

plant sale text: Log fern, found in swamps and calcareous floodplains of the Eastern U.S., produces large, upright fronds whose dark green color and elegant shape add a beautiful lushness to shady parts of a home landscape. A naturally occurring, fertile hybrid between D. goldiana and D. ludoviciana, log fern is semi-evergreen. It is often found growing on rotting logs (hence its common name).

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native range: eastern United States