Pictorial guide to the flora of the British Isles

Home ⟩ Pictorial Guide ⟩ Ceratophyllaceae ⟩ Ceratophyllum demersum / rigid hornwort

Ceratophyllum demersum L.

rigid hornwort (Ceratophyllaceae)

 SpreadBias within British IslesDirection of bias
WidespreadModerate tendencySE
Plant Atlas 2020
BSBI Distribution Map

Ceratophyllum demersum lives submerged in water, but this exposed specimen shows the leaf form.

Oxford (VC23: Oxfordshire); 2015-06-11

 rigid hornwort / Ceratophyllum demersum: _Ceratophyllum demersum_ lives submerged in water, but this exposed specimen shows the leaf form.

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