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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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venation
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To search the glossary, start typing, then select a word from the list.
Word
Definition
lobed
Incisions that do not extend deeper than halfway between the margin and the center of the blade
lorate
Strap-shaped
lumen
Cell cavity.
lunate
Half-moon shaped
lustrous
Glossy, shiny, reflecting light
lyrate
Lyre-shaped
m-chromosome
Minute chromosome usually one-tenth or less the size of other chromosomes of the complement, sometimes but not necessarily homologous with accessory chromosome, abbreviated to +1,+2, etc., where chromosome numbers are given.
macronemata
Large rhizoids produced round branch primordia and leaf axils.
mamilla(e)
Protuberance(s) from cell surface into which cell lumen projects , in surface view indistinguishable from papillae; adj. mamillose.
mamillate
Of cells with mamillae; of lid, convex with short point
membrane gap
Irregular openings in walls of hyaline cells of stem leaves of Sphagnum.
micrometre
(um) One-millionth of a metre, one-thousandth of a millimetre; referred to colloquially as micron or mu.
micronemata
Small, sparsely branched rhizoids produced on stem between leaves.
mid-leaf
Position approximately halfway up leaf and midway between margin and nerve or equivalent position if nerve is lacking.
mitriform
Conical and symmetrical with two or more slits
monoecious
Having antheridia and archegonia on same plant.
monopodial
Main stem of unlimited growth with inflorescences lateral.
morphology
General appearance or structure; adj., morphological.
mucro
Short broad projection from leaf apex; adj., mucronate.
mucronulate
Having, or tipped with, a small point or points.
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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