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Family Pteridaceae

Description: Terrestrial plants; rhizome erect or creeping, covered with non-peltate, non-clathrate scales; stipes not articulated to the rhizome.

Fronds mostly 1–4-pinnate, sometimes dimorphic, vernation circinate; veins free or anastomosing.

Sori either covering the surface of the fertile pinnae or linear and submarginal, true indusium absent, but a false indusium formed by the recurved margin of the lamina.


Distribution and occurrence: World: 5 genera, c. 300 species, tropical & temperate regions. Australia: 2 genera, 12 species, all States.

External links:
Wikipedia

Text by Peter G. Wilson
Taxon concept:

Taxa not yet included in identification key
Adiantum,    Anogramma,    Ceratopteris,    Cheilanthes,    Pellaea,    Pityrogramma,    Platyzoma,    Vittaria

 Key to the genera 
1Sporangia covering the lower surface of the fertile pinnae; plants growing in brackish swampsAcrostichum
Sporangia in linear, submarginal sori; plants never growing in brackish situationsPteris

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