Lolium
ryegrass
4 species
1 subspecies and varieties
Show only taxa with photos
Order by:
Scientific name
Common name
Display as:
Lolium multiflorumannual ryegrass, Italian ryegrass, perennial ryegrass
Distribution: Occurring on both sides of the Cascades crest in Washington; Alaska to California, east across North America to the Atlantic Coast.
Habitat: Roadsides and waste ground.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Biennial, Perennial
Lolium perenneEnglish ryegrass, perennial ryegrass
Distribution: Occurring on both sides of the Cascades crest; Alaska to California, east to the Atlantic Coast.
Habitat: Old fields, roadsides, and waste places.
Origin: Introduced from Europe
Flowers: May-July
Growth Duration: Perennial
Lolium persicumPersian ryegrass
Distribution: Occurring west of the Cascades crest in Washington; British Columbia to Washington, east across the northern U.S. and Canada to the Atlantic Coast.
Habitat: Disturbed areas at low elevations.
Origin: Introduced from Eurasia
Flowers: April-June
Growth Duration: Perennial
Lolium temulentumdarnel, tare
Distribution: Occurring chiefly west of the Cascades crest in Washington; Yukon Territory to California, east across North America to the Atlantic.
Habitat: Disturbed ground, pastures, and roadsides.
Origin: Introduced from the Mediterranean
Flowers: May-June
Growth Duration: Annual
ssp. temulentum – darnel