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Description: Terrestrial ferns; rhizome creeping or erect, sometimes arborescent and reaching a height of 1 m or more, densely covered with hairs; stipes not articulated to the rhizome, densely hairy at the base.
Fronds uniform or somewhat dimorphic, large, vernation circinate; lamina pinnate or more compound, leathery; veins free.
Sori numerous, ± circular, marginal or submarginal, indusiate; indusium double, 2-valved or cup-shaped, consisting of a recurved marginal lobe (false indusium) and an inner, true, indusium.
Distribution and occurrence: World: 5 genera, c. 50 species, tropical to southern temperate regions. Australia: 1 genus, 3 species, Qld, N.S.W., Vic., Tas., S.A.
Text by Peter G. Wilson
| ||Key to the genera|| |
|1||Rhizomes erect, arborescent; indusia 2-valved to cup-shaped, the 2 parts equal or almost so||Dicksonia|
|Rhizomes creeping; indusia 2-valved, the inner lip small and membranous||Calochlaena|