Persicaria praetermissa (Hook.f.) H.Hara

Spotted Knotweed

Fl. E. Himal. 73 (1966) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Scrambling or procumbent (usually) perennial, stems to c. 1 m long or more, bearing short, coarse, reflexed to retrorse hairs. Ochreas with scattered short, semi-appressed hairs, not ciliate at apex. Leaves oblong to narrowly ovate, hastate at base, 3–20 cm long, 6–18 mm wide, margins and veins with short coarse hairs, occasionally also scattered over lamina; petiole c. 8–20 mm long. Inflorescence slender, c. 5–9 cm long, usually forked at or above midway, with 2–5 clusters of flowers spaced along each branch; peduncle with spreading glandular hairs; perianth segments 2.5–3.5 mm long, pink or white, free to near base. Nut obtusely 3-angled or biconvex, c. 2.5 mm long, 2 mm wide, smooth and shining, dark brown or reddish. Flowers Nov.–May.

CVU, EGL, EGU, GipP, Gold, GGr, HNF, HSF, NIS, OtP, Strz, VAlp, VRiv, VVP, WPro. Also SA, Qld, NSW. Asia. Occasional in swampy areas and margins of slow-flowing rivers, chiefly in lowland and foothill country of the east and locally common, rather rare in the west (e.g. Portland, Grampians, Creswick, Port Campbell, Anglesea).

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.
Updated by: Val Stajsic, 2019-03-29
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Caryophyllanae
family Polygonaceae
genus Persicaria
Higher taxa


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

State distribution

Distribution map
South Australia
New South Wales