Callitriche sonderi Hegelm.

Matted Water-starwort

Verh. Bot. Vereins Prov. Brandenburg 9: 18 (1867) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Mostly terrestrial, mat-forming. Leaves linear-obovate, 0.8–5 mm long, 0.5–1.5 mm wide, obscurely 3-veined, petiolate; upper leaves not rosetted. Flowers usually paired, a male and female together in opposite axils; bracteoles linear-triangular, 0.2–0.5 mm long, deciduous; stamen 0.4–1 mm long, not elongating as fruit ripens, filament shorter than ripe fruit; styles erect, 0.1–0.3 mm long, persistent. Fruit subcordate, 0.5–0.8 mm long, 0.7–0.9 mm wide, subsessile, distinctly thicker at base, dark brown; wing very narrow. Flowers mainly Sep.–Dec.; fruits present most of year.

CVU, EGL, GipP, Glep, Gold, HSF, MuF, MuM, MSB, NIS, OtP, RobP, VRiv, VVP, Wim. Also SA, Qld, NSW, Tas. Widespread in Victoria, chiefly in drier inland areas, usually on river floodplains or other places subject to inundation.

Source: Jeanes, J.A. (1999). Callitrichaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2020-04-30
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Lamiales
genus Callitriche
Higher taxa


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

State distribution

Distribution map
South Australia
New South Wales