Polygonum bellardii All.

Tree Hogweed

Fl. Pedem. 2: 205, t.90, fig. 2 (1785) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Erect, usually much-branched annual, to c. 1 m high. Ochreas 4–12 mm long, soon disintegrating. Lower leaves lanceolate to oblong, 12–45 mm long, 2–5 mm wide, soon deciduous, margins flat, lateral veins not obvious; leaves in flowering part much reduced and bract-like. Flowers 1–3 in axillary clusters; perianth c. 3 mm long, the segments shortly united at base, the outer 3 segments green with white or pink margins, the inner 2 largely white or pink. Fruiting perianth slightly enlarged, to c. 4.5 mm long, the segments becoming more or less prominently reticulate-veined. Nut with 3 more or less equal concave faces, c. 3 mm long, shining brown. Flowers Nov.–Feb.

*GipP, *LoM, *MuM, *VRiv, *VVP, *Wim. Also naturalised WA, SA, Qld. Native of western and southern Europe. A troublesome weed of cereal crops on fertile loam soils in the Warracknabeal-Charlton area, occasionally also in grain-handling areas and on roadsides in grain-growing areas.

Source: Walsh, N.G. (1996). Polygonaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne (as Polygonum patulum M.Bieb.).
Updated by: Val Stajsic, 2019-03-29
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Caryophyllanae
family Polygonaceae
genus Polygonum
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Polygonum bellardii in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Polygonum bellardii in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present naturalised
Murray Mallee present introduced
Wimmera present naturalised
Victorian Volcanic Plain present naturalised
Victorian Riverina present introduced
Gippsland Plain present introduced

State distribution

Distribution map
Western Australia
South Australia
New South Wales