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The Ferns Identifier for the British Isles
Learn about ferns, Identify your fern specimen.
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general
leaf arrangement
leaf bases
leaf lobes
leaf margins
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leaf tips
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To search the glossary, start typing, then select a word from the list.
Word
Definition
entire
Smooth,not toothed or crenulate
epiphragm
Diaphragm or plate of tissue, formed from top of the columella, at mouth of capsule, attached to ends of peristome teeth.
erect
Of branches or stems, in a vertical position relative to stem or substrate. Of capsules, upright
erect
Of leaves, parallel to but not pressed against stem
erecto-patent
Of leaves, between erect and patent, at an angle of about 20-25 to stem
eroded
Worn away.
erose
Irregularly notched.
even-pinnate
with two apical leaflets
excurrent
Projecting beyond the end of the lamina.
exothecium
Superficial layer of cells of capsule; adj., exothecial.
exserted
Carried well above perichaetial leaves.
falcate
Curved like a sickle.
falcato-secund
Strongly curved and pointing in one direction.
farinose
Covered with a meal-like powder or minute particles.
fascicle
Group, bunch or tuft of branches; adj., fasciculate.
fastigiate
With branches reaching same height.
fibril
Fibre-like thickenings of walls of hyaline cells of Sphagnum; adj., fibrillose
filamentous
Thread-like.
filiform
Fine or thread-like.
fimbriate
Fringed
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Ferns
Adiantaceae
Adiantum
Anogramma
Cryptogramma
Aspidiaceae
Dryopteris
affinis
Gymnocarpium
Polystichum
Aspleniaceae
Asplenium
obovatum
trichomanes
Athyriaceae
Athyrium
distentifolium
Cystopteris
Woodsia
Azollaceae
Azolla
Blechnaceae
Blechnum
Dennstaedtiaceae
Pteridium
aquilinium
Hymenophyllaceae
Hymenophyllum
Trichomanes
Marsileaceae
Pilularia
Ophioglossaceae
Botrychium
Ophioglossum
Osmundaceae
Osmunda
Polypodiaceae
Polypodium
Pteridaceae
Pteris
Thelypteridaceae
Oreopteris
Phegopteris
Thelypteris