Pictorial guide to the flora of the British Isles

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Polypodium interjectum Shivas

intermediate polypody (Polypodiaceae)

 SpreadBias within British IslesDirection of bias
Very widespreadSlight tendencySW
Plant Atlas 2020
BSBI Distribution Map

Polypodium interjectum has leaves at least twice as long as wide (unlike Polypodium cambricum), and elliptic–oblong sori (unlike Polypodium vulgare).

Kennington (VC22: Berkshire); 2009-02-20

 intermediate polypody / Polypodium interjectum: _Polypodium interjectum_ has leaves at least twice as long as wide (unlike _Polypodium cambricum_), and elliptic–oblong sori (unlike _Polypodium vulgare_).

The sporangia of Polypodium interjectum have an average of 7–9 thick-walled cells in the ‘annulus’ (seen here orange against the paler background).

Oxford (VC23: Oxfordshire); 2018-09-29

 intermediate polypody / Polypodium interjectum: The sporangia of _Polypodium interjectum_ have an average of 7–9 thick-walled cells in the ‘annulus’ (seen here orange against the paler background).

All images copyright © Christopher J. Dixon unless otherwise indicated.

L-R: Bidens tripartita, Melilotus officinalis, Mimulus guttatus, Thalictrum flavum, Ranunculus peltatus, Anchusa arvensis, Malva alcea, Lolium perenne