Hardy Fern Home

D. clintoniana resources
Descriptive
Connecticut Botanical SocietyConnecticut Botanical Society
Distribution
North AmericaNorth America
WorldWorld
Drawing
Britton & BrownBritton & Brown
Flora
Flora of North AmericaFlora of North America
Herbarium
inoperativeNYBG, pinna only (link inoperative)
Monograph
Hoshizaki and WilsonHoshizaki and Wilson

All Ferns
  Dryopteridaceae
   Dryopteris
     aemula  affinis
     amurensis  arguta
     bissetiana  campyloptera
     carthusiana  caucasica
     celsa  championii
     clintoniana  crassirhizoma
     cristata  cycadina
     cystolepidota  decipiens
     dilatata  erythrosora
     expansa  filix-mas
     formosana  fragrans
     fuscipes  goldiana
     hondoensis  intermedia
     kuratae  lacera
     lepidopoda  ludoviciana
     marginalis  mindshelkensis
     oreades  pacifica
     polylepis  pseudo-filix-mas
     purpurella  remota
     sacrosancta  saxifraga
     sieboldii  stewartii
     sublacera  tokyoensis
     uniformis  varia
     wallichiana

 Other Genera
    Adiantum  Arachniodes
    Aspidotis  Asplenium
    Astrolepis  Athyrium
    Blechnum  Cheilanthes
    Cryptogramma  Cyrtomium
    Cystopteris  Dennstaedtia
    Deparia  Diplazium
    Gymnocarpium  Lygodium
    Matteuccia  Onoclea
    Oreopteris  Osmunda
    Pellaea  Phegopteris
    Pleopeltis  Polypodium
    Polystichum  Pteridium
    Pteris  Pyrrosia
    Thelypteris  Woodsia
    Woodwardia
 
Dryopteris clintoniana (D. C. Eaton) Dowell

Clinton's wood fern

Etymology Named for Judge G.W. Clinton (1807-1885), a well known naturalist of Buffalo, New York.
Description Rhizome: short-creeping.
Frond: 120 cm high by 20 cm wide, fertile fronds deciduous, sterile evergreen, somewhat dimorphic, fertile (1-several) smaller, blade/stipe ratio: 2:1 to 3:1.
Stipe: grooved, green, dark brown at base, scales scattered, tan, vascular bundles: 5 in a c-shaped pattern.
Blade: 1-pinnate-pinnatifid, almost more, lanceolate with nearly parallel sides, tapering only in the upper ¼, herbaceous, linear to ovate scales below, absent above.
Pinnae: 14 to 16 pair, above the basal pair, more alternate than opposite; costae grooved above, continuous from rachis to costae; margins serrate, minutely spiny; veins free, forked.
Sori: round, on veins, closer to the costa than the margin, indusium: reniform, at a sinus, sporangia: brownish, maturity: midsummer.
Culture Habitat: swampy woods. Distribution: ne North America. Hardy to -35°C, USDA Zone 3.
Synonyms
Dryopteris cristata (L.) Gray var. clintoniana (D.C. Eat.) Underwood
Dryopteris poyseri Wherry
Aspidium cristatum (L.) Swartz var. clintonianum D. C. Eaton
Thelypteris clintoniana House
Dryopteris claytoniana, invalid
Dryopteris clintoniana
Dryopteris clintoniana.  Illustration from The Cultivated Species of the Fern Genus Dryopteris in the United States, Barbara Joe Hoshizaki and Kenneth A. Wilson, American Fern Journal, 89, 1, (1999), with permission.
Dryopteris clintoniana
Dryopteris clintoniana. Five vascular bundles at both the base and the top of the stipe.  Drawing from Ferns of Northeastern United States, Farida A. Wiley, 1936.
Dryopteris clintoniana
Dryopteris clintoniana. a) frond, to 80 cm, long and broad (20 cm) but often great variation on the same plant; b) fertile pinnules, not quite 2-pinnate.  Illustration by V. Fulford from Ferns and Fern Allies of Canada, William J. Cody and Donald M. Britton, 1989, © Agriculture Canada, used with permission.
Valid XHTML 1.0     Reports of errors and omissions appreciated: toms AT hardyfernlibrary.com (please replace the AT with @)