Hardy Fern Home

D. wallichiana resources
Descriptive
anecdotal, habit times fouranecdotal, habit times four
Flora
Flora of JapanFlora of Japan
Herbarium
MBG, collected Costa RicaMBG, collected Costa Rica
Monograph
Hoshizaki and WilsonHoshizaki and Wilson
Photo
habithabit
Photo index
inoperativehabitat, habit, croziers, pinnules (link inoperative)
PlantSystematics.org, diagnostic photosPlantSystematics.org, diagnostic photos

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 wallichiana (Spreng.) Hyl.
Etymology Named after Nathaniel Wallich (1786-1854), British pteridologist
Description Rhizome: erect, massive, bearing several fronds in a whorl, sometimes producing offshoots, scaly.
Frond: 120 cm high by 20 cm wide, evergreen, monomorphic, blade/stipe ratio: 3:1 to 4:1.
Stipe: straw-colored or darker, grooved, scales on stipes lanceolate to ovate-lanceolate, to 2.5 cm long, acuminate at apex, black or very dark brown in Asian plants, mid-brown in Central America, vascular bundles: 3-7 in a c-shaped pattern.
Blade: 1-pinnate-pinnatifid, oblong-lanceolate, widest near the middle, stiff-papery, green to deep green, paler beneath, similar scales to stipe on rachis.
Pinnae: 20 to 35 pair, sessile; pinnules narrowly oblong, 5--8 mm broad, roundly truncate to round at apex; costae grooved above, continuous from rachis to costae; margins irregularly dentate; veins free, forked.
Sori: round, one medial row at each side of midribs of lobes, indusium: reniform, at a sinus, sporangia: brownish.
Culture Habitat: humus-rich mountain slopes in shade at 1700-3000 m. Distribution: from Mexico to Argentina, Zimbabwe, Madagascar, Turkey, east across all of Asia below southern China, Phillippines, Hawaii, i.e., anywhere in the subtropics or tropics with a mountain above 1700 m. Hardy to -25C, USDA Zone 5.
Distinctive Characteristics distinguished by narrow, dark (see above) scales, rectangular, regularly-spaced, lustrous pinnules, and conspicuous veins on the underside
Synonyms
Aspidium wallichianum Spreng
Dryopteris doiana Tagawa
Dryopteris paleacea (Sw.) C. Chr.
Aspidium parallelogrammum Kunze
Dryopteris filix-mas ssp. parallelogramma (Kunze) H. Christ
Lastrea filix-mas var. paleacea Moore
Nephrodium paleaceum Lowe
Dryopteris wallichiana
Dryopteris wallichiana.  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 wallichiana
Dryopteris wallichiana. In this Hawaian setting one is reminded of Matteuccia.  Photo by Forest & Kim Starr (USGS)
Valid XHTML 1.0     Reports of errors and omissions appreciated: toms AT hardyfernlibrary.com (please replace the AT with @)