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Fern - Wikipedia
Ferns have complex leaves called megaphylls that are more complex than the microphylls of clubmosses. Most ferns are leptosporangiate ferns. They produce coiled fiddleheads that uncoil and expand into fronds. The group includes about 10,560 known extant species. See more
Carl Linnaeus (1753) originally recognized 15 genera of ferns and fern allies, classifying them in class Cryptogamia in two groups, Filices (e.g. Polypodium) and Musci (mosses). By 1806 this had increased to 38 genera, and has progressively … See more
Sporophyte
Extant ferns are herbaceous perennials and most lack woody growth. When woody growth is present, it is found in the stem. Their foliage may be deciduous or evergreen, and some are semi-evergreen depending on the … See moreThe lifecycle of a fern involves two stages, as in club mosses and horsetails. In stage one, the spores are produced by sporophytes See more
Ferns are widespread in their distribution, with the greatest richness in the tropics and least in arctic areas. The greatest diversity occurs in … See more
Wikipedia text under CC-BY-SA license Fern Structure - US Forest Service
- Leaves. The leaves of ferns are often called fronds. Fronds are usually composed of a leafy …
- Fiddleheads. As new fronds emerge, generally in the spring, they unroll, these unrolling …
- Leaf Divisions. Depending on the species, fern leaves display a wide array of divisions. …
- Dimorphic Fronds. Some ferns have two kinds of fronds: fertile fronds (leaves with …
- Fern Sori. Sori (singular: sorus) are groups of sporangia (singular: sporangium), which …
Missouri Ferns | Missouri Department of Conservation
Mar 2, 2003 · It is easy to identify most Missouri ferns by their unusual leaves or fronds-slender stalks (stipes), together with their much divided, lacy and delicate leaf blades. There is …
Fern | Description, Features, Evolution, & Taxonomy
Jan 8, 2025 · Fern, class of several thousand species of nonflowering vascular plants that reproduce by spores. Ferns have true roots, stems, and complex leaves and constitute an ancient division of plants. Learn about their physical …
18 Different Types of Ferns (with Pictures) - Plantglossary
- Maidenhair Fern. Botanical name: Adiantum aleuticum. Common names: Maidenhair Fern, …
- Giant Leather Fern. Botanical name: Acrostichum danaeifolium. Common names: Giant …
- Bird’s Nest Fern. Botanical name: Asplenium nidus. Common names: Bird’s Nest Fern, Nest …
- Hart’s Tongue Fern. Botanical name: Asplenium Scolopendrium. Common names: Hart’s …
- Lady Fern. Botanical name: Athyrium filix-femina. Common names: Lady Fern, Common …
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Ferns and Fern Allies of Missouri | Missouri's Natural …
Dec 27, 2019 · In addition to their diverse structure, ferns exist in a wide range of leaf length, from 1/16 inches long (in an azolla fern) to almost five feet long (in a bracken fern). Within each fern species, there is generally dimorphism, or two …
What Are Fern Leaves Called: Understanding Ferns & Leaf …
Learn about fern leaves, called fronds, and their anatomy, variations, and functions. Discover the unique features of fiddleheads, the young coiled fronds that unfurl into mature leaves.
Fern - Leaf Stalk, Sporangia, Fronds | Britannica
Jan 8, 2025 · Fern leaves vary in the relationship of the petiole, or leaf stalk (often referred to as stipe in ferns), to the blade (the expanded part of the leaf). Many strap-shaped leaves essentially have no petiole and are described as sessile; …
About Ferns - American Fern Society
Learn about the biology, evolution, and diversity of ferns, one of the oldest groups of plants on Earth. Find out how ferns are different from seed plants, how they reproduce by spores, and what traits they share with other ferns.
Fern - Spore, Rhizome, Frond | Britannica
Jan 8, 2025 · The leaf (also known as frond) of ferns is the part of the plant most readily visible to observation. The leaf plan in practically all ferns is pinnate—that is, featherlike with a central axis
The evolution, morphology, and development of fern …
Here we discuss the theories of leaf evolution in ferns, morphology, and diversity of fern leaves, and experimental results of fern leaf development. We summarize what is known about the molecular genetics of fern leaf development and what …
Introduction to the identification of ferns - UW-Green Bay
New leaves are produced in the next growing season from the stem that overwinters at or below the soil surface. A few ferns have fronds which remain green over winter. The structure of fern …
Fern structure - Science Learning Hub
Sep 24, 2010 · The leaf of a fern. These are called fronds to distinguish them from the leaves of flowering plants. Leaves in flowering plants are purely concerned with photosynthesis whereas …
Ferns - General Characteristics - Frond, Allies, Fronds, and
A fern plant generally consists of one or more fronds attached to a rhizome. A frond is simply the leaf of the fern. A rhizome is a specialized, root-like stem. In most temperate-zone species of …
7.3: Ferns - Biology LibreTexts
Jan 30, 2024 · Fern leaves (megaphylls) are commonly referred to as fronds, which grow from an erect creeping rhizome (stem). They start as fiddleheads that uncurl. Fern sporophytes range …
Fern - Encyclopedia.com
May 14, 2018 · The leaf of a fern is called a frond and, in many species, the green blade is divided into segments called pinnae. The leaves of most ferns have a distinctive juvenile stage called …
Achillea filipendulina - Plant Finder - Missouri Botanical Garden
Achillea filipendulina, commonly known as fern-leaf yarrow, is an upright, clump-forming yarrow that is native to the Caucasus, Iran and Afghanistan. Deeply-dissected, 1-2 pinnatifid, hairy, …
What is a fern? - Science Learning Hub
Learn about the structure, reproduction and classification of ferns, an ancient group of green flowerless plants with divided leaves. Find out how ferns are unique among land plants and …
Polystichum acrostichoides - Plant Finder - Missouri Botanical …
Polystichum acrostichoides, commonly called Christmas fern, is a Missouri native fern which occurs in both dry and moist wooded slopes, moist banks and ravines. Typically grows in a …
Ferns: Unlocking The Secrets Of Low-Light Gardening
1 day ago · When exposed to intense, direct sunlight, fern leaves can become scorched and develop a burnt appearance. This is because ferns have delicate, thin leaves that are adapted …
The evolution, morphology, and development of fern leaves
Sep 4, 2013 · Here we discuss the theories of leaf evolution in ferns, morphology, and diversity of fern leaves, and experimental results of fern leaf development. We summarize what is known …
How to Grow a Bird’s Nest Fern - House Beautiful
2 days ago · Some ferns can be fussy to grow indoors and tend to drop fronds constantly (we’re looking at you, Boston fern!), but the bird’s nest fern is a true gem. With thick strappy leaves …
How to Grow and Care for Rabbit’s Foot Ferns
Feb 18, 2025 · Common name(s): Fijian hare’s foot, lacy hare’s foot, lacy paw, rabbit’s foot fern Plant type: Herbaceous evergreen epiphyte Hardiness (USDA Zone): 10-11 (outdoors) Native …
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