Aira caryophyllea L.

Silvery Hair-grass

Sp. Pl. 66 (1753) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Culms to 40 cm high. Leaves glabrous, minutely scabrous along nerves; blade inrolled, to 8 cm long and 0.5 mm wide; ligule toothed at apex, to 5 mm long. Panicle initially contracted with erect branches, finally open to sparse with spreading branches, to 15 cm long and 12 cm wide. Spikelets 2–3.5 mm long; glumes equal, acute; lemmas (excluding membranous apical lobes) about three-quarters as long as glumes, glabrous except for short callus hairs, minutely scabrous; awn present on both lemmas, inserted about one-third from base, 2.5–4 mm long. Flowers Sep.-Dec.

*CVU, *DunT, *EGL, *EGU, *GipP, *Gold, *GGr, *HNF, *HSF, *LoM, *MonT, *MuF, *NIS, *OtP, *OtR, *SnM, *Strz, *VAlp, *VRiv, *VVP, *WaP, *WPro, *Wim. Naturalized in all States except NT, also widely in e.g. southern Africa, the Americas, New Zealand. Indigenous to Europe, northern Africa, western Asia. In Victoria, occurs across a wide range of habitats, but not in perpetually moist sites or semi-arid areas.

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: Frank Udovicic, 2014-08-25
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Poaceae
genus Aira
Higher taxa


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

State distribution

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