British ferns (Filicopsida)

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L. Watson and M. J. Dallwitz

Contents

The keys and descriptions were generated from a DELTA database (Dallwitz 1980; Dallwitz, Paine, and Zurcher 1993).

Introduction

Conventional key • Interactive keys and interactive information retrieval (using Intkey or Navikey) • Hints on using the Intkey interactive key

Character list • Implicit attributes

Poems by Giles Watson

Acknowledgements • References • Citation • Contacts, conditions of use, contributions

Descriptions

The bold parts in the descriptions are diagnostic descriptions, generated with the aid of Intkey (Dallwitz, Paine, and Zurcher 1995). They distinguish most taxa in at least two respects from the other taxa.

• 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. British ferns (Filicopsida). Version: 4th January 2012. delta-intkey.com’.

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