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Athyriaceae | Family List

Athyriaceae Alston


Athyrium vidalii (Fr. et Sav.) Nakai

Credit: Liu, Yea-chen

Woodsiaceae (Diels) Herter 岩蕨科
Hypodematiaceae Ching腫足蕨科
Onocleaceae Pichi Sermollib球子蕨科

Terrestrial ferns. Rhizome usually short and stout, sometimes creeping and slender; scales thin, light brown, brown, black to shiny black, lanceolate or ovate; stipes with 2 vascular strands at base and uniting into a single U- or V-shaped strand above. Lamina usually thin, pinnate to decompound (tripinnate), rarely simple (one species in Taiwan); veins usually free, goniopteroid in two species, and forming areolae in two species; some species bearing multicellular hairs; adaxial rachis groove generally open to receive costae grooves but not in all genera (Deparia). Sori linear, single or double, J-shaped, reniform or round. Indusia usually present, sometimes small and fugacious or absent.


Key to the genera

1 Sterile and fertile leaf dimorphism   Pentarhizidium
+ Sterile and fertile leaf monomorphism   (2)
2 (1) Stipes or petioles articulated   (3)
+ Stipes or petioles not articulated   (4)
3 (2) Sori with indusia   Woodsia
+ Sori without indusia   Gymnocarpium
4 (2) Indusia round, inferior or semi-inferior   (5)
+ Indusia not as above or lacking   (6)
5 (4) Fonds and stipes with multicellular hairs   Acystopteris
+ Fonds and stipes without hairs   Cystopteris
6 (4) Stipe base swollen   (7)
+ Stipe base not swollen   (11)
7 (6) Rhizome and stipe base covered densely reddish brown scales   Hypodematium
+ Rhizome and stipe base covered with brown or black scales   (8)
8 (7) Grooves on dorsal sides of rachis and costae disconnected   Deparia
+ Grooves on dorsal sides of rachis and costae connected   (9)
9 (8) Rhizome erect, rare thin and long creeping   (10)
+ Rhizome thick, long creeping   Anisocampium
10 (9) Indusia absent   Cornopteris
+ Indusia exist   Athyrium
11 (6) Veins anastomosing, two or more rows of areolace side by the costae   Diplaziopsis
+ Veins free, one species with goniopteroid vein form   (12)
12 (11) Scales black or reddish brown; indusia thin   Diplazium
+ Scales brown; indusia thick   Rhachidosorus

  • List of lower taxa


    Related Objects  
  • Athyrium vidalii (Fr. et Sav.) Nakai (Liu, Yea-chen)
  • Image/JPEG

    Flora of China  
  • Athyriaceae (PDF)
  • PDF
  • Pteridophytes (Treatment)
  • Web Page

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