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Tree Fern
Dicksonia antarctica
γΈγ―γ½γγ’
A tree fern native to Australia. Cultivated as an ornamental in greenhouses and parks in Japan. Its crown of large pinnate fronds atop a trunk evokes a prehistoric atmosphere.
Identification Points
- βLarge pinnate fronds spread from the top of an erect trunk (rhizome)
- βTrunk composed of accumulated dead leaf-base remnants
- βSori at pinnule margins with cup-shaped indusia
Habitat
Greenhouses and parks (cultivated)
Season
Year-round
Morphological TraitsAI-estimated, needs verification
Evergreen/Deciduous
Evergreen
Leaf type
Compound
Habitat
Cultivated
Phylogenetic PositionγΈγ―γ½γγ’η§ β
Phylogenetic Position
Vascular plants > Polypodiophyta > Polypodiopsida > Cyatheales > Dicksoniaceae
Divergence Era
Jurassic (approx. 180 million years ago onward)
Evolution Notes
Dicksoniaceae is an ancient tree fern lineage dating back to the Jurassic, having independently evolved the ability to form trunk-like stems.
View on evolution timeline βSources & References
π€Claude AIηζοΌζͺη’ΊθͺοΌ
AI-generated, needs verification