Gahnia clarkei Benl

Tall Saw-sedge

Repert. Spec. Nov. Regni Veg. 44: 196, t. 247 (1938) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Tall, tussock-forming perennial, often with sprawling, elongated, cane-like culms to 10 m long. Culms stout, 1–5(–10) m high, 1–12 cm diam. Leaf-blades flat, recurved, scabrous, mostly shorter than culms; ligules narrow, chartaceous; sheaths pinkish to brown, dull or with some shining patches. Inflorescence erect to spreading, with relatively long lax branches, 50–125 cm long, with 10–14 nodes. Spikelets 2-flowered. Glumes 12–17, the lowest 7–10 much shorter than upper and mucronate or split apically, brown to dark grey-brown, glabrous, upper glumes obtuse at apex; stamens 3–6; anthers 1.3–2 mm long excluding apical appendage c. 0.2 mm long. Nut ovoid to ellipsoid or rarely obovoid, obscurely trigonous, smooth, reticulate, shining, 2.5–3.0 mm long, 1.5–1.8 mm diam., orange to red. Flowers spring–summer.

Brid, DunT, EGL, EGU, GipP, Glep, GGr, HFE, HSF, OtP, OtR, Strz, VAlp, VVP, WaP, WPro. Also SA, Qld, NSW. Locally common beside water-courses and fringing swamps, tolerating somewhat saline conditions.

Differs from G. grandis, the only other species with numerous short glumes at the base of the spikelet, in habit, nut shape and size, anther length and length of stamen filaments.

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 Gahnia
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Gahnia clarkei in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Gahnia clarkei in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Glenelg Plain present native
Bridgewater present native
Victorian Volcanic Plain present native
Gippsland Plain present native
Otway Plain present native
Warrnambool Plain present native
Greater Grampians present native
Dundas Tablelands present native
East Gippsland Lowlands present native
East Gippsland Uplands present native
Wilsons Promontory present native
Highlands-Southern Fall present native
Otway Ranges present native
Strzelecki Ranges present native
Highlands-Far East present native
Victorian Alps present native

State distribution

Distribution map
South Australia
New South Wales
Australian Capital Territory