Cyatheales
Order of ferns / From Wikipedia, the free encyclopedia
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The order Cyatheales, which includes most tree ferns, is a taxonomic order of the fern class, Polypodiopsida.[2] No clear morphological features characterize all of the Cyatheales, but DNA sequence data indicate the order is monophyletic. Some species in the Cyatheales have tree-like growth forms from a vertical rhizome, others have shorter or horizontal expanding rhizomes.
Tree fern (Cyatheales) | |
---|---|
Dicksonia antarctica | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Division: | Polypodiophyta |
Class: | Polypodiopsida |
Subclass: | Polypodiidae |
Order: | Cyatheales A.B.Frank |
Families | |
Note: These families are alternatively treated as subfamilies of the single family Cyatheaceae [1] |
Some species have scales on the stems and leaves, while others have hairs. However, most plants in the Cyatheales are tree ferns and have trunk-like stems up to 10 metres (33 ft) tall. It is unclear how many times the tree form has evolved and been lost in the order.[3]