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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
gregarious
Plants growing close together but not in mats or tufts.
guard cells
The cells surrounding the opening of a stoma.
gymnostomous
Without a peristome.
habit
Aspect or appearance of a plant.
hair-point
Hair-like leaf tip formed by attenuated apex or longly excurrent nerve, sometimes white when dry and giving leaf tips a hoary appearance.
hastate
Spear-shaped
hexagonal
Six-sided
hirsute
Hairy
hispid
Rough with bristles, stiff hairs, or minute spines.
homomallous
Pointing in one direction.
hyaline
Colourless and transparent.
imbricate
Appressed and overlapping.
immersed
Of capsule, surrounded by and overtopped by perichactial leaves; of stomata, sunken below surface of surrounding epidermal cells.
incised
The leaf is cut sharply and deeply, into usually regularly shaped lobes.
inclined
At an angle of 20-60 to the vertical
incrassate
Thick-walled.
incurred
Leaf margin curved upwards and inwards
inflated
Swollen.
inflexed
Leaf margin turned upwards and inwards
inflorescence
Structure composed of gametangia and surrounding leaves.
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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