Lolium perenneCommon name: Perennial Ryegrass
Distribution: Occurs from Northampton to Cape Arid.
Remarks: A tufted perennial to 90 centimetres tall. The flowers are produced from September to December. A native of Europe, North Africa and temperate Asia.
References: Western Weeds, A Guide to the Weeds of Western Australia. BMJ Hussey, GJ Keighery, J Dodd, SG Lloyd, RD Cousens. 1997.
Western Australian Plant Names and their Meanings, a Glossary. FA Sharr. 1996.
Flora of the Perth Region. NG Marchant, JR Wheeler, BL Rye, EM Bennett, NS Lander, TD Macfarlane. 1987.
Description and key to the identification of Grasses in South-Western Australia. JG Paterson. 1992.