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The Ferns Identifier for the British Isles
Learn about ferns, Identify your fern specimen.
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Glossary
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general
leaf arrangement
leaf bases
leaf lobes
leaf margins
leaf surface
leaf tips
moss
venation
whole leaves
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To search the glossary, start typing, then select a word from the list.
Word
Definition
unilateral
One-sided.
uniseriate
With cells in a single row.
unistratose
Cells in one layer only.
urceolate
Urn-shaped; narrowed below mouth then enlarged
vaginula
Sheath at base of seta derived from venter of archegonium.
velutinous
dense, fine upright hairs
venter
Layer of cells surrounding egg cell in swollen part of archegonium.
ventral
Upper or adaxial surface of leaf.
vermicular
Worm-like; long, narrow and wavy.
verrucose
Roughened.
vesiculose
bubbly
villous
long fine hairs
weft
Loosely interwoven shoots.
whorled
Arranged in ring.
x
Basic haploid chromosome number.
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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