Lolium rigidum Gaudich.

Wimmera Rye-grass

Agrost. Helv. 1: 334 (1811) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Tufted annual, culms erect, to 100 cm high; stems typically reddish, particularly about the nodes. Leaf-blades flat, convolute when young, to 20 cm long and 8 mm wide; ligules to 1.5 mm long; auricles usually inconspicuous or absent. Spike to 30 cm long; rachis mostly more than 1 mm (to 2 mm) diam. Spikelets 5–11-flowered, 4–18 mm long; glume stiff, mostly three-quarters as long as to slightly longer than the spikelet; lemma ovate to oblong-lanceolate, awnless or rarely with an awn to 3 mm long. Flowers Aug.–Dec.

*CVU, *DunT, *EGL, *EGU, *GipP, *Glep, *Gold, *GGr, *HNF, *HSF, *LoM, *MuF, *MuM, *MSB, *NIS, *OtP, *RobP, *Strz, *VRiv, *VVP, *WaP, *Wim. Naturalized in all States, also South America. Native to the Mediterranean area. Apart from the cooler and wetter parts of the State, widespread and common.

The common name was coined originally for a cultivar of the species selected for its success as a pasture grass under relatively dry, poor conditions, but the name has since commonly been applied to all strains of the species occurring in southern Australia.

Hybrids occur between L. rigidum and both L. perenne and L. multiflorum, the chief contributions of L. rigidum to the hybrid being typically a reddish pigmentation of the stem, a slightly longer than normal glume, and the annual life-form.

Source: Walsh, N.G. (1994). Poaceae. 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 Poaceae
genus Lolium
Higher taxa


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

State distribution

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