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Ferns (Filicopsida) of Britain and Ireland |
This contents page, the key, and the descriptions were generated automatically from a DELTA database (Dallwitz 1980; Dallwitz, Paine, and Zurcher 1993).
Interactive key, including interactive information retrieval • Hints on using the interactive key
The interactive key is easy to use, allows free choice of characters, and can lead to correct identifications in spite of occasional errors. It can display all the illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, distributions of character states within any set of taxa, geographical distribution, genera included in each family, and classifications (Dahlgren; Dahlgren, Clifford, and Yeo; Cronquist; APG).
Character list • Implicit attributes • DELTA data files
Poems on cryptogams by Giles Watson
Acknowledgements • References • Citation • Contacts, conditions of use, contributions
The bold parts in the descriptions are diagnostic descriptions, generated with the aid of Intkey (Dallwitz, Paine, and Zurcher 1995, 2000). They distinguish most taxa in at least one respect from the other taxa.
We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key. See also Guidelines for using data taken from Web publications.
• Adiantum capillus-veneris L. • Adiantum raddianum K. Presl • Anogramma leptophylla (L.) Link • Asplenium adiantum-nigrum L. • Asplenium fontanum (L.) Bernh. • Asplenium marinum L. • Asplenium obovatum Viv. • Asplenium onopteris L. • Asplenium ruta-muraria L. • Asplenium septentrionale L.) Hoffm. • Asplenium trichomanes L. • Asplenium viride Huds. • Athyrium distentifolium Tausch ex Opiz • Athyrium filix-femina (L.) Roth • Athyrium flexile (Newman) Druce • Azolla filiculoides Lam.
• Blechnum cordatum (Desv.) Hieron. • Blechnum spicant (L.) Roth • Botrychium lunaria (L.) Sw.
• Ceterach officinarum DC. • Cryptogramma crispa (L.) R. Br. ex Hook. • Cyrtomium falcatum (L. f.) C. Presl • Cystopteris alpina (Lam.) Desv. • Cystopteris diaphana (Bory) Blasdell • Cystopteris dickieana Sim • Cystopteris fragilis (L.) Bernh. • Cystopteris montana (Lam.) Desv.
• Dicksonia antarctica Labill. • Dryopteris aemula (Ait.) O Kuntze • Dryopteris affinis (Lowe) Fraser-Jenkins • Dryopteris carthusiana Villar) H.P. Fuchs • Dryopteris cristata (L.) A. Gray • Dryopteris dilatata Hoffm.) A. Gray • Dryopteris expansa (C. Presl) Fraser-Jenk. & Jermy • Dryopteris filix-mas (L.) Schott • Dryopteris oreades Formin • Dryopteris remota (A. Braun ex Döll) Druce • Dryopteris submontana (Fraser-Jenk. & Jermy) Fraser-Jenk.
• Gymnocarpium dryopteris (L.) Newman • Gymnocarpium robertianum (Hoffm.) Newman
• Hymenophyllum tunbrigense (L.) Sm. • Hymenophyllum wilsonii Hook.
• Matteuccia struthiopteris (L.) Tod.
• Onoclea sensibilis L. • Ophioglossum azoricum C. Presl • Ophioglossum lusitanicum L. • Ophioglossum vulgatum L. • Oreopteris limbosperma (All.) Holub • Osmunda regalis L.
• Phegopteris connectilis (Michx.) Watt • Phyllitis scolopendrium (L.) Newm. • Phymatodes diversifolia (Willd.) Pic. Serm. • Pilularia globulifera L. • Polypodium cambricum L. • Polypodium interjectum Shivas • Polypodium vulgare L. • Polystichum aculeatum (L.) Roth) • Polystichum lonchitis (L.) Roth • Polystichum munitum (Kaulf.) C. Presl • Polystichum setiferum (Forsk.) Woynar • Pteridium aquilinum (L.) Kuhn subsp. aquilinum • Pteridium aquilinum (L.) Kuhn subsp. latiusculum • Pteris cretica L.
• Thelypteris palustris Schott • Trichomanes speciosum Willd.
• Woodsia alpina (Bolton) S.F. Gray • Woodsia ilvensis (L.) R.Br. • Woodwardia radicans (L.) Sm.
Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2004 onwards. Ferns (Filicopsida) of Britain and Ireland. Version: 5th August 2019. delta-intkey.com’.
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