Hardy Fern Home

P. rigens resources
Flora of JapanFlora of Japan
inoperativehabit (link inoperative)
inoperativehabit (link inoperative)

All Ferns
     acrostichoides  aculeatum
     andersonii  braunii
     craspedosorum  imbricans
     kruckebergii  lemmonii
     lepidocaulon  lonchitis
     makinoi  munitum
     neolobatum  polyblepharum
     proliferum  retroso-paleaceum
     rigens  scopulinum
     setiferum  setigerum
     tagawanum  tripteron
     tsus-simense  xiphophyllum

 Other Genera
    Adiantum  Arachniodes
    Aspidotis  Asplenium
    Astrolepis  Athyrium
    Blechnum  Cheilanthes
    Cryptogramma  Cyrtomium
    Cystopteris  Dennstaedtia
    Deparia  Diplazium
    Dryopteris  Gymnocarpium
    Lygodium  Matteuccia
    Onoclea  Oreopteris
    Osmunda  Pellaea
    Phegopteris  Pleopeltis
    Polypodium  Pteridium
    Pteris  Pyrrosia
    Thelypteris  Woodsia
Polystichum rigens Tagawa

Rigid sword fern

Etymology Rigens means rigid.
Description Rhizome: erect, short, thick, scales ovate-lanceolate, to 1.5 cm long, bright brown to pale brown.
Frond: 45 cm high by 20 cm wide, evergreen, monomorphic, blade/stipe ratio: 3:2.
Stipe: straw-colored above, darker at base, grooved, scales at base of stipes brown or blackish, continuing onto rachis, vascular bundles: 4 or more, in an arc.
Blade: 2-pinnate, lanceolate, glossy, leathery, linear to lanceolate scales below.
Pinnae: 11 to 18 pair, lanceolate, terminated with a long spine; pinnules the upper one closest to the rachis larger; margins serrate; veins free, forked.
Sori: round, in rows on both sides of the midrib, near to it, indusium: peltate, central.
Culture Habitat: open montane forests. Distribution: Japan, China. Hardy to -25C, USDA Zone 5.
Valid XHTML 1.0     Reports of errors and omissions appreciated: toms AT hardyfernlibrary.com (please replace the AT with @)