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Ferns and Horsetails (Monilophytes)
Clubmosses and Quillworts (Lycophytes)
Polypodium interjectum  •  Intermediate Polypody
Polypodium interjectum Shivas; P.vulgare ssp.prionades (Asch.) Rothm.; Intermediate Polypody; Western Polypody
Intermediate Plypody. Cumbria, March
Single frond. Oxford, late October Single frond, underside. late Oxford, October
Single frond. Oxford, late October Single frond, underside. Oxford, late October
Frond. Oxford, late October Upper part of frond. Oxfordshire, February
Lower part of frond. Oxfordshire, February Lower part of frond. Oxfordshire, February
Detail of frond. Cumbria, late July Upper part of frond, underside showing immature sori. Oxfordshire, February
Upper part of frond, underside showing immature sori. Oxfordshire, February Upper part of frond, underside showing mature sori, shedding spores. Oxfordshire, February
Mid section of frond, underside showing sori after spores shed. Oxfordshire, February Fronds showing mature sori. Cumbria, March
Underside of pinnule showing sori, mid development. Oxford, late October Underside of pinnule showing sori, mid development. Oxford, late October
Sorus showing sporangia, slightly less developed than above. Oxford, late October Sporangia, mid development. Oxford, late October
Developing fronds on exposed site on mortared limestone wall. Oxfordshire, early September Developing fronds on exposed site on mortared limestone wall. Oxfordshire, early September
Young fronds on exposed site on mortared limestone wall. Oxfordshire, early September Developing fronds on exposed site on mortared limestone wall. Oxfordshire, early September
Young fronds on exposed site on mortared rock wall. Isles of Scilly, late June Plants growing in semi-sheltered site on mortared slate wall. Cumbria, late July
Plants growing in semi-sheltered site on mortared slate wall. Asplenium trichomanes ssp. quadrivalens in foreground. Cumbria, late July Plants growing in sheltered site in crack in concrete bridge. Oxford, late October
On tree-trunk. Cumbria, March On tree-trunk. Cumbria, March
On fallen tree. Oxfordshire, February On fallen tree. Oxfordshire, February
On fallen tree. Oxfordshire, February On fallen tree. Oxfordshire, February
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