Pictorial guide to the flora of the British Isles

Home ⟩ Pictorial Guide ⟩ Asteraceae / Compositae ⟩ Sonchus oleraceus / smooth sow-thistle

Sonchus oleraceus L.

smooth sow-thistle (Asteraceae / Compositae)

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

Sonchus oleraceus grows on roadsides and waste ground throughout the British Isles.

Oxford (VC23: Oxfordshire); 2009-06-09

 smooth sow-thistle / Sonchus oleraceus: _Sonchus oleraceus_ grows on roadsides and waste ground throughout the British Isles.

The auricles on the leaf-bases of Sonchus oleraceus are rounded, whereas those of Sonchus asper are pointed.

Oxford (VC23: Oxfordshire); 2014-06-19

 smooth sow-thistle / Sonchus oleraceus: The auricles on the leaf-bases of _Sonchus oleraceus_ are rounded, whereas those of _Sonchus asper_ are pointed.

Inflorescences

Shotover (VC23: Oxfordshire); 2014-07-08

 smooth sow-thistle / Sonchus oleraceus: Inflorescences

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