Lythrum wilsonii Hewson

Fl. Australia 18: 322 (1990) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Threat status:Victoria: vulnerable (v)


Newly discovered for Victoria in 2011.

Annual or perennial herb, prostrate to erect, to 50 cm tall, minutely scabrous. Leaves mostly alternate, narrowly ovate to narrowly  elliptic, 0.5–2.5 cm long, 1–6 mm wide, sessile; apex usually acute; base attenuate. Flowers 1–7 in axillary cymes or clusters; pedicel c. 1 mm long; hypanthium  tubular, to 3–5 mm long, 1–1.5 mm diam., appendages 4–6, narrowly triangular, c. 1 mm long; sepals 4–6, triangular, c. 0.5 mm long; petals 4–6, spreading, obovate to elliptic, 2–3.5 mm long, pink or pale purple; stamens 4–6, included. Capsule cylindric, shorter than or equal to hypanthium, dehiscing by 4 valves. Flowers Jul.–Dec.

MuM, VRiv. Also WA, NT, Qld, NSW, SA. In Victoria, apparently restricted to seasonal wetlands south of Swan Hill, growing in exposed areas in Eucalyptus largiflorens woodland.

This species is principally distinguished from L. hyssopifolia by the clustered (rather than solitary) flowers.

See note under L. paradoxum.

Created by: Andre Messina, 2016-06-03
Updated by: Val Stajsic, 2019-01-07
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Rosanae
order Myrtales
family Lythraceae
genus Lythrum
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Lythrum wilsonii in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Lythrum wilsonii in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Murray Mallee present native
Victorian Riverina present native

State distribution

Distribution map
Western Australia
Northern Territory
South Australia
New South Wales