Flora of Victoria

Slender aquatic or terrestrial perennial. Culms weak, filiform, leafy, submerged and elongated, or creeping and procumbent, or erect and tufted and to 10 cm high. Spikelets solitary, elliptic in outline, strongly flattened, 5–10(–15)-flowered, 3–5 mm long; involucral bract shorter than to slightly exceeding spikelet, glume-like or with a short thickened appendage; glumes obtuse, conspicuously numerous-nerved, straw-coloured with red-brown patches, 1.7–2.8 mm long; stamens 2 or rarely 3; anthers 0.5–1.0 mm long; style 2-fid. Nut plano-convex, with angles not well-defined, broad-obovoid to ellipsoid, smooth, minutely reticulate, shining, grey-brown to dark brown, from one-half to three-quarters as long as glume, 1.4–1.8 mm long, c. 1 mm diam. Flowers spring–summer.

CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HFE, HNF, HSF, LoM, MonT, MuF, NIS, OtP, OtR, SnM, Strz, VAlp, VRiv, VVP, WaP, WPro, Wim. Widespread in swamps and streams, mostly in the cooler, southern parts of the State, but extending north near St Arnaud, Nagambie, Wangaratta areas.

3 varieties, 2 in Victoria. Variety nervosa (Hochst. ex A.Rich.) Lye is endemic to Ethiopia.

Source: Wilson, K.L. (1994). Cyperaceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 2, Ferns and Allied Plants, Conifers and Monocotyledons. Inkata Press, Melbourne.

Updated by: Andre Messina, 2014-09-02

Key to the varieties of Isolepis fluitans

life Life

kingdom Plantae

phylum Tracheophyta

class Magnoliopsida

superorder Lilianae

order Poales

family Cyperaceae

genus Isolepis

Higher taxa

species Isolepis fluitans (L.) R.Br.

Subordinate taxa

variety Isolepis fluitans var. fluitans

variety Isolepis fluitans var. lenticularis (R.Br.) Muasya

Synonyms

Scirpus fluitans L.

Victoria

**Source:** AVH (2014). *Australia's Virtual Herbarium*, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Isolepis fluitans in AVH ; *Victorian Biodiversity Atlas*, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Isolepis fluitans in Victorian Biodiversity Atlas

Bioregion	Occurrence status	Establishment means
Lowan Mallee	present	native
Wimmera	present	native
Glenelg Plain	present	native
Victorian Volcanic Plain	present	native
Victorian Riverina	present	native
Murray Fans	present	native
Gippsland Plain	present	native
Otway Plain	present	native
Warrnambool Plain	present	native
Goldfields	present	native
Central Victorian Uplands	present	native
Greater Grampians	present	native
Dundas Tablelands	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
Otway Ranges	present	native
Strzelecki Ranges	present	native
Monaro Tablelands	present	native
Highlands-Far East	present	native
Victorian Alps	present	native
Snowy Mountains	present	native

Bioregions of Victoria

State distribution

State
Western Australia
South Australia
Queensland
New South Wales
Australian Capital Territory
Victoria
Tasmania

Isolepis fluitans (L.) R.Br.

Floating Club-rush

Synonyms

Victoria

State distribution