Lythrum hyssopifolia L.

Lesser Loosestrife

Sp. Pl. 447 (1753) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Uncertain

Annual herb, decumbent to ascending, to 50 cm tall, glabrous; stems ribbed, to 60 cm long. Leaves mostly alternate, linear to oblong or oblong-lanceolate, 0.5–4 cm long, 2–10 mm wide, sessile or subsessile; apex acute to obtuse; base obtuse. Flowers solitary in upper leaf axils; pedicel to 1 mm long; hypanthium obconical, 3–6 mm long, c. 1 mm diam., appendages 4–6, narrow-triangular, 1–1.5 mm long; sepals 4–6, triangular, 0.5–1 mm long, with apical hair tuft; petals 4–6, spreading, ovate, 1–4 mm long, pink, blue or purple; stamens usually 4–6, rarely 8–12 and dimorphic, included to slightly exserted. Capsule cylindric, about the same length as hypanthium, dehiscing by 2–4 valves. Flowers mainly Sep.–Feb.

Brid, CVU, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, LoM, MuF, MuM, MSB, NIS, OtP, OtR, RobP, SnM, Strz, VAlp, VRiv, VVP, WaP, Wim, *DunT. All States (?introduced WA). Southern Europe. Widespread across much of Victoria, usually in damp or flooded areas.

Source: Jeanes, J.A. (1996). Lythraceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 3, Dicotyledons Winteraceae to Myrtaceae. Inkata Press, Melbourne.
Updated by: Daniel Ohlsen, 2017-06-14
Hero image
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 hyssopifolia in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Lythrum hyssopifolia in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present uncertain
Murray Mallee present uncertain
Wimmera present uncertain
Glenelg Plain present uncertain
Bridgewater 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 uncertain
Otway Plain present uncertain
Warrnambool Plain present uncertain
Goldfields present uncertain
Central Victorian Uplands present uncertain
Greater Grampians present uncertain
Dundas Tablelands present introduced
Northern Inland Slopes present uncertain
East Gippsland Lowlands present uncertain
East Gippsland Uplands present uncertain
Highlands-Southern Fall present uncertain
Highlands-Northern Fall present uncertain
Otway Ranges present uncertain
Strzelecki Ranges present uncertain
Victorian Alps present uncertain
Snowy Mountains present uncertain

State distribution

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