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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
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To search the glossary, start typing, then select a word from the list.
Word
Definition
oppressed
Pressed against stem.
orbicular
circular in outline
oval
Resembling an ellipse in shape; elliptical.
ovate
Egg-shaped in outline and widest below middle, about twice as long as wide
ovoid
Three-dimensional shape about twice as long as wide, egg-shaped
paleaceous
Densely hairy
palmate
Palm-shaped; with several lobes from a single point.
panduriform
Violin-shaped
pannose
Similar in texture or appearance to felt or woolen cloth.
papilla
Solid projection from cell surface; adj. papillose
parallel
Veins running in parallel with each other
paraphyllia
Small, leaf-like or variously divided structures on stem between the leaves
paraphyses
Unisteriate, hair-like structures mixed with the antheridia and archegonia.
parenchymatous
Hexagonal cells with upper and lower ends at right-angles to main axis and with walls of uniform thickness.
paroecious
Having the antheridia naked in the axils of leaves immediately beneath the perichaetium
parted
Cleft almost to the base, so as to have distinct divisions or lobes.
patent
At angle to the stem of roughly 45
pectinate
Having projections resembling the teeth of a comb; comblike.
pedate
Having palmately divided lobes with the lateral lobes cleft or divided
pellucid
Translucent, clear.
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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