Aspleniaceae
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Spleenwort family
Aspleniaceae
チャセンシダ科
A large family centered on the genus Asplenium (spleenworts), with approximately 700 species distributed worldwide. Found in a wide range of habitats including rock faces, tree trunks, and forest floors, with numerous species native to Japan. Sori are linear, covered by indusia that open on one side (linear indusia).
Key Characteristics
- ●Sori linear
- ●Indusia attached on one side of the vein, opening outward (linear indusia)
- ●Fronds range from simple to multiply pinnate
- ●Natural hybridization is extremely common
Phylogenetic Position
Vascular plants > Polypodiophyta > Polypodiopsida > Polypodiales > Aspleniaceae
Divergence Era
Jurassic to Cretaceous (ca. 150 million years ago–)
Representative Genera
チャセンシダ属（Asplenium）カミガモシダ属（Hymenasplenium）
Related Evolution Events
- ・Evolution of linear indusia (unilaterally opening) and subsequent stable radiation
- ・Promotion of speciation through hybridization and polyploidization
Plants in Spleenwort family on this site
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