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fern    音标拼音: [f'ɚn]
n. 蕨类植物

蕨类植物

fern
n 1: any of numerous flowerless and seedless vascular plants
having true roots from a rhizome and fronds that uncurl
upward; reproduce by spores

Fern \Fern\, adv.
Long ago. [Obs.] --Chaucer.
[1913 Webster]


Fern \Fern\, a. [AS. fyrn.]
Ancient; old. [Obs.] "Pilgrimages to . . . ferne halwes."
[saints]. --Chaucer.
[1913 Webster]


Fern \Fern\ (f[~e]rn), n. [AS. fearn; akin to D. varen, G. farn,
farnkraut; cf. Skr. par[.n]a wing, feather, leaf, sort of
plant, or Lith. papartis fern.] (Bot.)
An order of cryptogamous plants, the {Filices}, which have
their fructification on the back of the fronds or leaves.
They are usually found in humid soil, sometimes grow
epiphytically on trees, and in tropical climates often attain
a gigantic size.
[1913 Webster]

Note: The plants are asexual, and bear clustered sporangia,
containing minute spores, which germinate and form
prothalli, on which are borne the true organs of
reproduction. The brake or bracken, the maidenhair, and
the polypody are all well known ferns.
[1913 Webster]

{Christmas fern}. See under {Christmas}.

{Climbing fern} (Bot.), a delicate North American fern
({Lygodium palmatum}), which climbs several feet high over
bushes, etc., and is much sought for purposes of
decoration.

{Fern owl}. (Zool.)
(a) The European goatsucker.
(b) The short-eared owl. [Prov. Eng.] -- {Fern shaw}, a fern
thicket. [Eng.] --R. Browning.
[1913 Webster]


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  • fern - YouTube
    We are launching something new: Roots 🥳 It starts with a newsletter, packed with awesome and weird stories (like why there is barely any Wendy's in Europe) And because you're early, you'll
  • Fern - Wikipedia
    Ferns are not of major economic importance, but some are used as food, medicine, and ornamental plants They also play a role in human culture The life cycle of a fern occurs in two stages (as in clubmosses and horsetails)
  • Home - Fern
    Fern is dedicated to protecting forests and the rights of people who depend on them We campaign for environmental and social justice in the forest-related policies of the EU
  • Fern | Description, Features, Evolution, Taxonomy | Britannica
    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 characteristics, life cycle, genetics, evolutionary history, and classification
  • About fern
    Meet the team behind fern, a YouTube channel with 4M+ subscribers Motion designers, editors, and writers crafting honest stories from Amsterdam
  • Fern | Frieren Wiki | Fandom
    She is an orphaned war refugee originally from the Southern Lands, later adopted by Heiter and placed under Frieren's care after his death Fern has a mature personality as a result of her upbringing, leading her to often act as the mother of the party
  • fern
    Fern Video is the future of journalism We investigate, animate and tell stories that matter Select projects are produced in partnership with established outlets, bringing their reporting to life
  • What Are Ferns? - US Forest Service
    Ferns are plants that do not have flowers Ferns generally reproduce by producing spores Similar to flowering plants, ferns have roots, stems and leaves
  • About Ferns - American Fern Society
    What follows is a short primer on the biology of ferns, starting at the beginning, with how ferns first originated and evolved into the plants we see in the present, making special note of some of the groups that went extinct along the way
  • 30 Different Types of Ferns (with Pictures) - Plantglossary
    Ferns are one of the oldest types of plants on the planet, with fern fossils dating back as far as 360 million years There are a huge range of ferns still alive today, growing in a variety of climates and habitats all over the world





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