Ludwigia peploides subsp. montevidensis (Spreng.) P.H.Raven


Reinwardtia 6: 395 (1963) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Uncertain

Prostrate perennial herb, pubescent; branches to 2 m long, rooting at nodes or floating, stems ascending when in flower; submerged parts bearing pneumatophores. Leaves alternate, broadly oblanceolate to elliptic, rarely orbicular, 1–10 cm long, 4–30 mm wide, entire; petiole 5–40 mm long. Flowers on slender peduncles, solitary in upper leaf axils; bracteoles deltoid, conspicuous; sepals 5, green, 5–12 mm long, deltoid to lanceolate, acuminate; petals 5, bright yellow, deciduous, 7–24 mm long, obovate, rounded or truncate; stamens 10, filaments shortly attached to petals; ovary 5-celled. Fruit a 10-ribbed cylindric capsule, 1–4 cm long, tardily and irregularly dehiscent; seeds embedded in the endocarp.  Flowers mostly Dec.–May.

CVU, EGL, Gold, HSF, MuF, MuM, MSB, NIS, RobP, VRiv, VVP, *GipP. Widespread in Victoria where found mainly in lowland lakes and lagoons.

Plants are very variable particularly in indumentum and leaf size and shape. Considered by some authorities to be introduced, but the early dates of two collections (1803 by Caley, 1804 by Brown) would suggest that it is most likely indigenous. At least some populations in Victoria such as in Melbourne are most probably not indigenous. The type subspecies is almost cosmopolitan but does not occur in Australia.

Source: Jeanes, J.A. (1996). Onagraceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2018-03-14
Hero image
Distribution map


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Ludwigia peploides subsp. montevidensis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Ludwigia peploides subsp. montevidensis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Murray Mallee present uncertain
Victorian Volcanic Plain present uncertain
Victorian Riverina present uncertain
Murray Scroll Belt present uncertain
Robinvale Plains present uncertain
Murray Fans present uncertain
Gippsland Plain present introduced
Goldfields present uncertain
Central Victorian Uplands present uncertain
Northern Inland Slopes present uncertain
East Gippsland Lowlands present uncertain
Highlands-Southern Fall present uncertain

State distribution

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