Flora of North America species comparison

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Dryopteris celsa

Dryopteris campyloptera

log fern

dryoptère arquée, eastern spreading wood fern, mountain wood fern
Leaves

monomorphic, dying back in winter, 65–120 × 15–30 cm.

monomorphic, dying back in winter, 25–90 × 15–30 cm.
Petiole

1/3 length of leaf, scaly at least at base;

scales scattered, dark brown or tan with dark central stripe.

1/3 length of leaf, scaly at least at base;

scales scattered, brown, sometimes with darker patch at base.
Blade

green, ovate-lanceolate, gradually tapering to tip, pinnate-pinnatifid, herbaceous, not glandular.

light green, deltate-ovate, 3-pinnate-pinnatifid, herbaceous, not glandular.
Pinnae

± in plane of blade, lanceolate-ovate;

basal pinnae linear-oblong, much reduced, basal pinnules longer than adjacent pinnules, basal basiscopic pinnule and basal acroscopic pinnule equal;

pinnule margins crenately toothed.

in plane of blade, lanceolate;

basal pinnae deltate to broadly lanceolate, not reduced, basal pinnules equal to adjacent pinnules, basal basiscopic pinnule much longer and 2 times width of basal acroscopic pinnule (only in this species);

pinnule margins toothed, teeth spine-tipped.
Indusia

lacking glands.

usually lacking glands.
Sori

midway between midvein and margin of segments.

midway between midvein and margin of segments.
2n

= 164.

= 164.

Dryopteris celsa

Dryopteris campyloptera
Habitat Seepage slopes, hammocks and logs in swamps, mostly on the Piedmont and Coastal Plain Cool, moist woods at increasing elevation southward, frequently only at summits of mountains
Elevation 50–800 m (200–2600 ft) 0–1500 m (0–4900 ft)
Distribution
from FNA
AL; AR; DE; GA; IL; KY; LA; MD; MI; MO; NC; NJ; NY; PA; SC; TN; VA; WV
[WildflowerSearch map]
[BONAP county map]
from FNA
CT; MA; MD; ME; NC; NH; NY; RI; TN; VA; VT; WV; NB; NF; NS; PE; QC
[WildflowerSearch map]
[BONAP county map]
Discussion

Dryopteris celsa is a fertile allotetraploid derived from hybridization between D. goldieana and D. ludoviciana. Dryopteris celsa hybridizes with six species; hybrids can usually be identified by the dark-striped scales.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 2. FNA vol. 2.
Parent taxa Dryopteridaceae > Dryopteris Dryopteridaceae > Dryopteris
Sibling taxa
D. arguta, D. campyloptera, D. carthusiana, D. cinnamomea, D. clintoniana, D. cristata, D. expansa, D. filix-mas, D. fragrans, D. goldieana, D. intermedia, D. ludoviciana, D. marginalis
D. arguta, D. carthusiana, D. celsa, D. cinnamomea, D. clintoniana, D. cristata, D. expansa, D. filix-mas, D. fragrans, D. goldieana, D. intermedia, D. ludoviciana, D. marginalis
Synonyms D. goldiana subsp. celsa Aspidium campylopterum, D. austriaca, D. spinulosa var. americana, D. spinulosa var. concordiana
Name authority (W. Palmer) Knowlton: W. Palmer, & Pollard, Proc. Biol. Soc. Wash. 13: 202. (1900) (Kunze) Clarkson: Amer. Fern J. 20: 118. (1930)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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