Conium maculatum L.


Sp. Pl. 243 (1753) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Malodorous, robust perennial herb, 1–2.5 m high, main stems hollow, red-brown- to purple-spotted, often with a very large taproot. Leaves triangular in outline, 10–50 cm long; ultimate segments 1–2.5 cm long, margins coarsely to finely toothed; petiole to 60 cm long, longitudinally furrowed, purple-specked, with a long sheathing base. Umbels 3–7 cm diam.; common peduncle to 20 cm long; rays 6–20, 1.5–3.5 cm long; bracts 5–6, 2–8 mm long, reflexed, entire; umbellules 10–20-flowered, 5–8 mm diam.; pedicels 2–8 mm long; bracts 5–6, c. ovate, 2–8 mm long; bracteoles 3–6, ovate, 2–2.5 mm long, acuminate, often fused at base. Petals white or pink, c. 1.2 mm long. Fruit 2.5–4 mm long. Flowers mostly Aug.–Dec.

*CVU, *EGL, *EGU, *GipP, *Glep, *Gold, *GGr, *HNF, *HSF, *MuF, *MuM, *NIS, *OtP, *OtR, *Strz, *VAlp, *VRiv, *VVP, *WaP. Also naturalised WA, SA, Qld, NSW, Tas. Native to many regions of the Northern Hemisphere. A widespread weed of disturbed sites such as river banks, roadsides and wasteland where it can be locally dominant. .

This species is highly toxic.

Source: Duretto, M.F. (1999). Apiaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Apiales
family Apiaceae
genus Conium
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Conium maculatum in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Conium maculatum in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Murray Mallee present introduced
Glenelg Plain present naturalised
Victorian Volcanic Plain present naturalised
Victorian Riverina present naturalised
Murray Fans present naturalised
Gippsland Plain present naturalised
Otway Plain present naturalised
Warrnambool Plain present naturalised
Goldfields present naturalised
Central Victorian Uplands present naturalised
Greater Grampians present introduced
Northern Inland Slopes present naturalised
East Gippsland Lowlands present naturalised
East Gippsland Uplands present naturalised
Highlands-Southern Fall present naturalised
Highlands-Northern Fall present naturalised
Otway Ranges present naturalised
Strzelecki Ranges present naturalised
Victorian Alps present naturalised

State distribution

Distribution map
Western Australia
South Australia
New South Wales
Australian Capital Territory