Pictorial guide to the flora of the British Isles

Home ⟩ Pictorial Guide ⟩ Woodsiaceae ⟩ Woodsia ilvensis / oblong woodsia

Woodsia ilvensis (L.) R. Br.

oblong woodsia (Woodsiaceae)

 SpreadBias within British IslesDirection of bias
LocalSlight tendencyN
Plant Atlas 2020
BSBI Distribution Map

Woodsia ilvensis is an extremely rare Arctic–Alpine fern, largely because of disastrous overcollection in Victorian times.

Beddgelert (VC49: Caernarvonshire); 2020-08-12

 oblong woodsia / Woodsia ilvensis: _Woodsia ilvensis_ is an extremely rare <a href="aa.html">Arctic–Alpine</a> fern, largely because of disastrous overcollection in Victorian times.

Woodsia ilvensis has hairier leaves than its slightly more abundant congener, Woodsia alpina, which has few hairs on the upper surface.

Beddgelert (VC49: Caernarvonshire); 2018-10-29

 oblong woodsia / Woodsia ilvensis: _Woodsia ilvensis_ has hairier leaves than its slightly more abundant congener, _Woodsia alpina_, which has few hairs on the upper surface.

The sori of Woodsia ilvensis are arranged around the margin of each pinnule segment; the indusium quickly breaks up into threads, forming a fringe around the sorus.

Beddgelert (VC49: Caernarvonshire); 2020-08-12

 oblong woodsia / Woodsia ilvensis: The sori of _Woodsia ilvensis_ are arranged around the margin of each pinnule segment; the indusium quickly breaks up into threads, forming a fringe around the sorus.

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