Pictorial guide to the flora of the British Isles

Home ⟩ Pictorial Guide ⟩ Apiaceae / Umbelliferae ⟩ Heracleum sphondylium / hogweed

Heracleum sphondylium L.

hogweed (Apiaceae / Umbelliferae)

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

Heracleum sphondylium is a large umbellifer found throughout the British Isles.

Oxford (VC23: Oxfordshire); 2011-10-14

 hogweed / Heracleum sphondylium: _Heracleum sphondylium_ is a large umbellifer found throughout the British Isles.

The petals along the outside of the inflorescences are larger than the others, even within individual flowers.

Shotover (VC23: Oxfordshire); 2013-11-08

 hogweed / Heracleum sphondylium: The petals along the outside of the inflorescences are larger than the others, even within individual flowers.

The fruits of Heracleum sphondylium have broad lateral wings.

Oxford (VC23: Oxfordshire); 2013-11-04

 hogweed / Heracleum sphondylium: The fruits of _Heracleum sphondylium_ have broad lateral wings.

Heracleum sphondylium subsp. sphondylium var. angustifolium has distinctively narrow leaf-lobes.

Temple Guiting (VC33: East Gloucestershire); 2018-06-21

 hogweed / Heracleum sphondylium: _Heracleum sphondylium_ subsp. _sphondylium_ var. _angustifolium_ has distinctively narrow leaf-lobes.

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