Avena sterilis L.

Sterile Oat

Sp. Pl., edn 2, 1: 118 (1762) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Culms erect, to 160 cm high. Leaves glabrous or sparsely ciliate near base; blade finely scabrous to 45 cm long and 25 mm wide; ligule membranous, to 8 mm long. Inflorescence a loose but rather narrow panicle to 40 cm long. Spikelets rather few per inflorescence, drooping, 3–5-flowered; glumes lanceolate, 30–50 mm long, 9–11-nerved; lemma lanceolate, 23–30 mm long (including apical lobes), bilobed at apex with teeth to 3.5 mm long, the lower two lemmas with silky hairs over the lower two-thirds, upper florets commonly glabrous; awn 60–9070 mm long, inserted below midway on lemma; palea 3–10 mm shorter than lemma. Florets falling united at maturity. Flowers Sep.–Dec.

*CVU, *GipP, *Gold, *HSF, *LoM, *MuF, *MuM, *NIS, *OtP, *VRiv, *VVP, *Wim.

Very similar to A. ludoviciana (which has been regarded as a subspecies of A. sterilis) but distinguished by the larger spikelets. It tends to flower and fruit later in the year than A. ludoviciana.

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.
Updated by: Daniel Ohlsen, 2017-06-29
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Poaceae
genus Avena
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Avena sterilis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Avena sterilis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Lowan Mallee present naturalised
Murray Mallee present naturalised
Wimmera present introduced
Victorian Volcanic Plain present naturalised
Victorian Riverina present naturalised
Murray Fans present naturalised
Gippsland Plain present naturalised
Otway Plain present naturalised
Goldfields present naturalised
Central Victorian Uplands present naturalised
Northern Inland Slopes present naturalised
Highlands-Southern Fall present introduced

State distribution

Distribution map
Western Australia
New South Wales
Australian Capital Territory