Gahnia radula (R.Br.) Benth.

Thatch Saw-sedge

Fl. Austral. 7: 417 (1878) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Native

Narrowly tufted, rhizomatous perennial. Culms 50–100 cm high, 2.5–5 mm diam. Leaf-blades flat, erect, scabrous, longer than inflorescence; ligules narrow, chartaceous; sheaths grey-brown, often pinkish above, dull. Inflorescence narrow, erect to ascending, 50–70 cm long, with 5–9 nodes. Spikelets 2-flowered; glumes 5–7, uppermost 2 or 3 much shorter and broader and with erose or fimbriate upper margin, dark grey-brown to blackish, glabrous or minutely scabrous, lower glumes with acuminate to retuse apex; stamens 3; anthers 1.7–2 mm long excluding apical appendage 0.1–0.2 mm long. Nut obovoid to ellipsoid, obscurely trigonous, reticulate, shining, 1.5–2.0 mm long, 1.0–1.3 mm diam., straw-coloured to dark brown with whitish outer layer. Flowers spring–summer.

CVU, DunT, EGL, EGU, GipP, Glep, Gold, GGr, HNF, HSF, NIS, OtP, OtR, Strz, VAlp, VRiv, VVP, WaP, WPro, Wim. Also SA, NSW, Tas. Widespread on seasonally wet or poorly drained silty soils in woodland or forest-clearings.

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: Val Stajsic, 2019-03-05
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 radula in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Gahnia radula in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Wimmera present native
Glenelg Plain present native
Victorian Volcanic Plain present native
Victorian Riverina 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
Victorian Alps present native

State distribution

Distribution map
South Australia
New South Wales
Australian Capital Territory