Dicksoniaceae
Image: Wikimedia Commons (See link for license)
Tree fern family
Dicksoniaceae
ジクソニア科
A family of tree ferns distributed mainly in temperate to tropical regions of the Southern Hemisphere. Large pinnately compound fronds are borne in a crown atop a trunk-like stem. Not native to Japan but occasionally introduced for horticulture.
Key Characteristics
- ●Arborescent (stems erect and trunk-like)
- ●Large 2- to 3-pinnately compound fronds
- ●Sori positioned at veinlet tips along the margin, enclosed by bivalved indusia
- ●Homosporous
Phylogenetic Position
Vascular plants > Polypodiophyta > Polypodiopsida > Cyatheales > Dicksoniaceae
Divergence Era
Jurassic (approx. 180 million years ago onward)
Representative Genera
ジクソニア属（Dicksonia）シボトゥム属（Cibotium）
Related Evolution Events
- ・Adaptation for height competition through arborescence (stem thickening and erect growth)
- ・Convergent evolution of tree fern habit independently from Cyatheaceae
Plants in Tree fern family on this site
AI-generated, needs verification