Pictorial guide to the flora of the British Isles

Mercurialis annua L. annual mercury (Euphorbiaceae)	Spread	Bias within British Isles	Direction of bias
	Widespread	Strong tendency	SE
Plant Atlas 2020
BSBI Distribution Map

Mercurialis annua is a non-native weed of open, disturbed ground, mostly found in the south and east of Britain and Ireland.

Oxford (VC23: Oxfordshire); 2014-06-03

annual mercury / Mercurialis annua: _Mercurialis annua_ is a non-native weed of open, disturbed ground, mostly found in the south and east of Britain and Ireland.

Mercurialis annua is generally dioecious; the male flowers are borne on long, erect pedicels, whereas female plants have nearly sessile flowers in leaf axils.

Oxford (VC23: Oxfordshire); 2014-06-03

annual mercury / Mercurialis annua: _Mercurialis annua_ is generally dioecious; the male flowers are borne on long, erect pedicels, whereas female plants have nearly sessile flowers in leaf axils.

Female plant in flower

Oxford (VC23: Oxfordshire); 2015-05-13

L-R: Bidens tripartita, Melilotus officinalis, Mimulus guttatus, Thalictrum flavum, Ranunculus peltatus, Anchusa arvensis, Malva alcea, Lolium perenne

Pictorial guide to the flora of the British Isles

Mercurialis annua L.

annual mercury (Euphorbiaceae)