Definitions for ferns
ferns

WikipediaRate this definition:0.0 / 0 votes

1. ferns

   A fern (Polypodiopsida or Polypodiophyta ) is a member of a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers. The polypodiophytes include all living pteridophytes except the lycopods, and differ from mosses and other bryophytes by being vascular, i.e., having specialized tissues that conduct water and nutrients and in having life cycles in which the branched sporophyte is the dominant phase. 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. 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. Ferns first appear in the fossil record about 360 million years ago in the late Devonian period, but many of the current families and species did not appear until roughly 145 million years ago in the early Cretaceous, after flowering plants came to dominate many environments. The fern Osmunda claytoniana is a paramount example of evolutionary stasis; paleontological evidence indicates it has remained unchanged, even at the level of fossilized nuclei and chromosomes, for at least 180 million years. Ferns are not of major economic importance, but some are used for food, medicine, as biofertilizer, as ornamental plants, and for remediating contaminated soil. They have been the subject of research for their ability to remove some chemical pollutants from the atmosphere. Some fern species, such as bracken (Pteridium aquilinum) and water fern (Azolla filiculoides) are significant weeds worldwide. Some fern genera, such as Azolla, can fix nitrogen and make a significant input to the nitrogen nutrition of rice paddies. They also play certain roles in folklore.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Ferns

   Seedless nonflowering plants of the class Filicinae. They reproduce by spores that appear as dots on the underside of feathery fronds. In earlier classifications the Pteridophyta included the club mosses, horsetails, ferns, and various fossil groups. In more recent classifications, pteridophytes and spermatophytes (seed-bearing plants) are in the division, or phylum, Tracheophyta.

Surnames Frequency by Census RecordsRate this definition:0.0 / 0 votes

1. FERNS

   According to the U.S. Census Bureau, Ferns is ranked #47272 in terms of the most common surnames in America.
   
   The Ferns surname appeared 449 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 0 would have the surname Ferns.
   
   86.4% or 388 total occurrences were White.
   5.5% or 25 total occurrences were of Hispanic origin.
   3.5% or 16 total occurrences were Black.
   2.6% or 12 total occurrences were Asian.

Anagrams for ferns »

1. nerfs

How to pronounce ferns?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say ferns in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of ferns in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of ferns in Pythagorean Numerology is: 8

Examples of ferns in a Sentence

1. Jim Faust:

   Modern poinsettias are not your grandmother’s plants. Breeding has dramatically improved their consumer performance, back in the day, growers would place ferns or pine boughs in the pot along with the poinsettia to provide greenery, because the poinsettia leaves would fall off so quickly. Today’s poinsettias will last well into January if watered properly and provided enough sunlight.

2. Caleb Marshall Brown:

   The lack of horsetails, and rarity of cycads and conifers is surprising, given that these are very common in the surrounding flora, even within ferns, it looks like Borealopelta may have had a preference for certain types of ferns, while ignoring others.

3. David Greenwood:

   We could see the different layers of cells in a leaf fragment including the epidermis with the pores, called stomata, through which plants take in carbon dioxide, we could also see the surface patterning of the epidermis cells, which was like a jigsaw pattern that we see on many living ferns.

4. Paul Barrett:

   Instead of just feeding on mushy ferns or low-growing horsetails, it means they might have been much more important in munching tough plants like conifers or cycads, which suggests they may have been feeding on quite different things, maybe living in different environments from time to time, and even potentially acting as vectors for moving seeds and fruits around for those different types of plants.

5. Brad Jenkins:

   When that episode of' Between Two Ferns' came out, it was a huge game changer on both sides. We realized we could be doing this kind of stuff all the time, we could be working with nonprofits, foundations, political campaigns, institutions... and the best comedy writers in the country.

Popularity rank by frequency of use

References

1. ^ Wikipedia
   https://en.wikipedia.org/wiki/Ferns
2. ^ Surnames Frequency by Census Records
   https://www.census.gov/topics/population/genealogy/data/2010_surnames.html