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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.
- 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 – Wikipédia, a enciclopédia livre
Fern. "Fern" pode ser: Fern Park, localidade da Flórida....
- Athyrium filix-femina - Wikipedia
2 de mai. de 2024 · Fern is a class of nonflowering, herbaceous vascular plants that reproduce by spores and have true roots, stems, and complex leaves. Learn about the diversity, distribution, and ecological role of ferns, as well as their ancient origin and taxonomy.
Azolla (mosquito fern, duckweed fern, fairy moss, water fern) is a genus of seven species of aquatic ferns in the family Salviniaceae. They are extremely reduced in form and specialized, looking nothing like other typical ferns but more resembling duckweed or some mosses.
INTRODUCTION. Ferns are one of the oldest groups of plants on Earth, with a fossil record dating back to the middle Devonian (383-393 million years ago) (Taylor, Taylor, and Krings, 2009). Recent divergence time estimates suggest they may be even older, possibly having first evolved as far back as 430 mya (Testo and Sundue, 2016).
