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The group includes about 10,560 known extant species. Ferns are defined here in the broad sense, being all of the Polypodiopsida, comprising both the leptosporangiate ( Polypodiidae) and eusporangiate ferns, the latter group including horsetails, whisk ferns, marattioid ferns, and ophioglossoid ferns .
- Fern (disambiguation) - Wikipedia
Fern is the common name for plants in the class...
- Tree fern - Wikipedia
The tree ferns are arborescent (tree-like) ferns that grow...
- Athyrium filix-femina - Wikipedia
Athyrium filix-femina, the lady fern or common lady-fern, is...
- Fern - Simple English Wikipedia, the free encyclopedia
Ferns are a group of about 20,000 species of plants. About...
- Fern (disambiguation) - Wikipedia
Ferns are a group of about 20,000 species of plants. About 10,000 are living: they are in the division Pteridophyta. Unlike bryophytes, ferns have xylem and phloem, which makes them vascular plants. Unlike seed plants like angiosperms (flowering plants) or gymnosperms, ferns do not have seeds.
The tree ferns are arborescent (tree-like) ferns that grow with a trunk elevating the fronds above ground level, making them trees. Many extant tree ferns are members of the order Cyatheales, to which belong the families Cyatheaceae (scaly tree ferns), Dicksoniaceae, Metaxyaceae, and Cibotiaceae.
While ferns first evolved in the Devonian, they became one of the most dominant groups of plants on the planet during the Carboniferous (299-369 mya). Growing alongside the giant tree lycophytes ( e.g., Lepidodendron) in vast swamps, ferns thrived and diversified for several million years.
A fern, or pteridophyte, is any one of a group of plants classified in the Division Pteridophyta, formerly known as Filicophyta. A fern is a vascular plant that differs from the more primitive lycophytes in having true leaves (megaphylls) and from the more advanced seed plants ( gymnosperms and angiosperms ) in lacking seeds , and instead ...
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Athyrium filix-femina, the lady fern or common lady-fern, is a large, feathery species of fern native to temperate Asia, Europe, North Africa, Canada and the US. [1] It is often abundant (one of the more common ferns) in damp, shady woodland environments and is often grown for decoration.
May 14, 2018 · Ferns are plants in the Filicinophyta phylum, also called the Pteridophyta phylum. They are intermediate in complexity between the more primitive (i.e., evolu-tionarily ancient) bryophytes (mosses, liverworts, and hornworts) and the more advanced (or recent) seed plants. Like bryophytes, ferns reproduce sexually by making spores rather than seeds.
