Eleocharis sphacelata R.Br.

Tall Spike-rush

Prodr. 224 (1810) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Perennial aquatic with stout rhizome. Culms terete, transversely septate, to 5 m high (in deep water), to c. 1.5 m above water, 4–12 mm diam. Spikelet terete, tapering to apex, 3–5 cm long, 8–9 mm diam., glumes ± obtuse, finely striate with a fairly prominent midrib and narrow hyaline margins, straw-coloured, usually with dark reddish band near margins, 7–11 mm long; hypogynous bristles 8–10, reaching at least to top of the style-base, sparsely but regularly toothed, united at the base; stamens 3; anthers 3–5 mm long; style 3-fid. Nut turgidly biconvex, with angles not ribbed, obovoid to orbicular, straw-coloured to dark golden brown, 2–2.7 mm long, 1.8–2.5 mm diam., external cells irregularly isodiametric, often elongated vertically in no regular series; style-base from one-half as long as to equalling and about two-thirds as wide as nut. Flowers spring–summer.

CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, MonT, MuF, MuM, NIS, OtP, OtR, SnM, Strz, VAlp, VRiv, VVP, WaP, WPro, Wim. All States. New Guinea. In still or slow-moving freshwater to 5 m deep or more; widespread from near sea-level to subalps (e.g. Mt Buffalo).

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.
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Cyperaceae
genus Eleocharis
Higher taxa


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

State distribution

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