Hardy Fern Home

D. oreades resources
Descriptive
Skye Flora, diagnostic photosSkye Flora, diagnostic photos
Monograph
Hoshizaki and WilsonHoshizaki and Wilson
Photo
inoperativehabitat, Shropshire, England (link inoperative)

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 oreades Fomin

Mountain male fern, dwarf male fern

Etymology In Greek mythology the Oreades were the nymphs of the mountains. This is the male fern of the mountains.
Description Rhizome: erect, branching; shuttlecock-like clusters eventually making large clusters.
Frond: 70 cm high by 15 cm wide, deciduous, but persisting, monomorphic, blade/stipe ratio: 3:1.
Stipe: grooved, scales moderately dense at the base, lanceolate, tannish, thinning out upwards, vascular bundles: 3-7 in a c-shaped pattern.
Blade: 2-pinnate at the base, less upwards, ovate-lanceolate, stiff, dull surface, linear to ovate scales below, absent above.
Pinnae: 12 to 30 pair, opposite to alternate; pinnules with blunt teeth at the apex, often curling upward from the plane of the blade; costae grooved above, continuous from rachis to costae; margins crenately lobed, curling upwards; veins free, forked.
Sori: round, in 1 row between midrib and margin, confined to the distal one-third of the blade, indusium: reniform, thick, green young, tawny-gray-brown later, at a sinus, sporangia: brownish, maturity: midsummer to early fall.
Dimensionality: lower pinnae curve forward and down, out of the plane of the blade.
Culture Habitat: talus slopes. Distribution: Iceland, Norway, south to Portugal, Spain, east to the Caucasus, Pakistan. Hardy to -30C, USDA Zone 4.
Distinctive Characteristics similar to D. filix-mas, but narrower blade, a smaller plant, and the combination of the curled pinnule margins and the lower pinnae bending forward and down gives a characteristic crisped appearance (from C.N. Page, "Ferns of Britain and Ireland", 1997.
Synonyms
Lastrea propinqua Wollaston ex Lowe
Dryopteris abbreviata (DC.) Newman misapplied
Dryopteris filix-mas ssp. oreades (Fomin) O.Bolos & Vigo
Dryopteris oreades
Dryopteris oreades.  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.
Valid XHTML 1.0     Reports of errors and omissions appreciated: toms AT hardyfernlibrary.com (please replace the AT with @)