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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
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
repand
Having a somewhat wavy margin
resorbed
Eroded parts of cell walls of Sphagnum; resorption, erosion of cell walls of Sphagnum; resorption furrow, furrow formed by erosion of cell walls at margin of leaves of some species of Sphagnum
reticulate
Resembling or forming a net or network.
retort cell
Cortical cells in some Sphagnum species ending in a projection with a pore .
retuse
Broad apex with a slight indentation.
revolute
Strongly rolled backwards or under
rhizoids
Uniseriate branched structures occurring on stem and sometimes old leaves, sometimes anchoring plant to substrate.
rhizomatous
Having horizontal underground stems analogous with rhizome of higher plants.
rhomboidal
narrowly diamond-shaped
ribbed
Where the main veins form prominent ridges
ringed
Of Sphagnum pores, pore surrounded by fibril ring.
rostehate
With short beak
rostrate
With long beak
rounded
With a spherical tip
rugose
With irregular transverse undulations.
runcinate
ragged sides
sagittate
Having the shape of an arrowhead.
saxicolous
Growing on rock.
scabrous
Rough.
scarious
Thin and papery in texture.
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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