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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 - Wikipedia
    The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (land plants with vascular tissues such as xylem and phloem) that reproduce via spores and have neither seeds nor flowers
  • 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
  • 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
  • 35 Types of Fern to Freshen Up Your Home or Garden - The Spruce
    With approximately 10,000 different species, ferns come in various sizes, shapes, and growth patterns, commonly thriving in shady, moist environments These perennials can be evergreen or deciduous and propagate through spores found on their fronds
  • How to Keep Your Porch Ferns Green and Lush All Season and Beyond
    Ferns are a classic finishing touch, and the Boston fern, also known as a sword fern, is the most iconic porch fern of them all Popular since Victorian times, the Boston fern features graceful, arching fronds that can reach 4 feet in length
  • FERN |
    The Food Emergency Response Network (FERN) is composed of four components: the FERN Steering Committee, the FERN National Program Office (NPO), FERN Support Programs, and the FERN Regional Coordination Centers (RCCs)
  • American Fern Society
    AFS members have access to spore collections from hundreds of fern species from around the world Review our spore inventory and spore collection protocol for more details
  • Fern Varieties: 20 Types Of Indoors Outdoors Ferns with Pictures
    Here is a list of 20 stunning fern varieties to grow indoors or outdoors with pictures and useful tips to help you to identify the different species of ferns and give them the care they need
  • How to Grow and Care for Outdoor Ferns
    Get the basics about outdoor fern care with our helpful guide, including light, watering, and soil requirements, and types of popular landscape ferns
  • Fern Canyon in Prairie Creek Redwoods SP
    Fern Canyon is a remarkable place A level trail of about one mile follows Home Creek as it courses through the forest This modest stream has over the eons carved a 50 to 80 foot deep canyon through the rich sedimentary soils The canyon walls sprout an amazing variety of luxuriant ferns and other moisture-loving plants On a sunny day, thousands of tiny drops of moisture make the canyon





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