Pictorial guide to the flora of the British Isles

Home ⟩ Pictorial Guide ⟩ Potamogetonaceae ⟩ Zannichellia palustris subsp. palustris / sessile horned pondweed

Zannichellia palustris subsp. palustris L.

sessile horned pondweed (Potamogetonaceae)

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Plant Atlas 2020
BSBI Distribution Map

Zannichellia palustris subsp. palustris is a widespread aquatic plant with opposite linear leaves.

Boddington (VC33: East Gloucestershire); 2020-06-30

 sessile horned pondweed / Zannichellia palustris subsp. palustris: _Zannichellia palustris_ subsp. _palustris_ is a widespread aquatic plant with opposite linear leaves.

The male flowers of Zannichellia palustris consist of 1 or 2 naked stamens.

Boddington (VC33: East Gloucestershire); 2020-06-30

 sessile horned pondweed / Zannichellia palustris subsp. palustris: The male flowers of _Zannichellia palustris_ consist of 1 or 2 naked stamens.

The fruits of Zannichellia palustris are beaked and slightly curved; in subsp. palustris, they are (almost) sessile.

Fairmile (VC11: South Hampshire); 2019-07-16

 sessile horned pondweed / Zannichellia palustris subsp. palustris: The fruits of _Zannichellia palustris_ are beaked and slightly curved; in subsp. _palustris_, they are (almost) sessile.

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