Agrostis viridis Gouan

Water Bent

Hortus Monsp. 546 (1762) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Stoloniferous perennial, culms ascending to erect, to 100 cm high. Leaf-blades flat, scabrous on both surfaces, to 15 cm long and 5 mm wide; sheaths smooth; ligules membranous, truncate, to 5 mm long. Inflorescence a rather dense panicle of several whorls of branchlets, the lower usually somewhat distant from the upper, to 12 cm long and 4 cm wide; spikelets falling entire, usually with a part of the pedicel, at maturity; glumes broadly acute, scabrous to some extent on sides, sometimes ciliate along margins, 1.5–2 mm long; lemma ovate, c. 1 mm long, membranous, shallowly dentate; palea subequal to lemma; anthers c. 0.5 mm long. Flowers Sep.–Mar.

*GipP, *Glep, *Gold, *OtR, *VVP. Also naturalised NT, SA, NSW, ACT, Tas. Native to northern Africa, temperate regions of Asia, India, Pakistan, and Europe. Known from a few scattered localities, mostly in southern Victoria, e.g. Hamilton, Essendon, Wonthaggi, but probably more widespread. A weed of damp or wet sites, e.g. irrigation ditches, roadside drains etc.

Distinctive amongst other Agrostis in Victoria by the spikelets which fall with the glumes attached. For this reason it has sometimes been included in Polypogon but it differs from other species of that genus in lacking awned glumes. The general habit of the plant is also more consistent with Agrostis (perennial, stoloniferous) than Polypogon (commonly tufted, annual).

Created by: Neville Walsh, 2016-03-30
Updated by: Val Stajsic, 2019-01-10
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Lilianae
order Poales
family Poaceae
genus Agrostis
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Agrostis viridis in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Agrostis viridis in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Glenelg Plain present introduced
Victorian Volcanic Plain present naturalised
Gippsland Plain present introduced
Goldfields present introduced
Otway Ranges present introduced