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Family ADIANTACEAE

Synonyms: Sinopteridaceae APNI*
Taenitidaceae APNI*

Description: Terrestrial, lithophytic or epiphytic ferns .Rhizome erect, ascending or short and tufted to long creeping, bearing scales or rarely bristles.

Fronds 1–5-pinnate, dimorphic or not, stipe dark brown or black, usually glossy, scaly at the base to rarely glabrous sometimes hairy above, sometimes grooved; pinnules flabellate to lanceolate rarely linear, membraneous to coriaceus, glabrous to sparsely or densely hairy or scaly, sometimes with a waxy powder underneath.

Sori terminal on veins or spreading along them, either borne on and covered by the strongly recurved marginal lobes forming a false indusia, lobing often associated with notches or grooves in the margin of the segment or near margin of lamina, sometimes protected by reflexed lamina or a marginal (false) indusium, or superficial or rarely covering the entite lamina; true indusium absent.


Distribution and occurrence: World: 28 genera, c. 600 species, tropical and temperate regions,. Australia: 8 genera. c. 35 species, all states.

External links:
Wikipedia

Text by Peter D. Hind; extracted and modified from Flora of Australia vol 48
Taxon concept: P.D. Bostock

 Key to the genera 
1Sori borne only on a reflexed modified flap of lamina (soral flap)Adiantum
Sori superficial, marginal or submarginal, sometimes covered by a reflexed flap of lamina but not borne on that flap, or protected by a marginal indusium2
2Sori superficial, borne along the length of the veins, exindusiate3
Sori marginal or submarginal, continuous or interupted
                       Back to 1
4
3Lamina herbaceous to thinly coriaceous; abaxial surface usually with a white or golden yellow waxy coatingPityrogramma
Lamina membraneous to thinly herbaceous; abaxial surface lacking a coloured waxy coating
                       Back to 2
Anogramma
4Ultimate segments usually more than 10 mm long; if less then fronds only once pinnatePellaea
Ultimate segments 8 mm or less long; fronds at least pinnate-pinnatifid
                       Back to 2
Cheilanthes

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