Taxon  Report   4946 
Lolium perenne  L.  (not an active name; please see Festuca perennis)
English rye grass,  Perennial rye grass, Perennial ryegrass
Lolium perenne
© 2009 Barry Rice
Click on a photo to see it bigger.
Lolium perenne, a monocot, is a perennial grass that is not native to California; it was introduced from elsewhere and naturalized in the wild.
It is an invasive plant. The California Invasive Plant Council classifies its potential impact on native ecosystems as moderate (plant profile / CalWeedMapper).

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Plant Characteristics
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Bloom Period
Lolium perenne
© 2008 Keir Morse
Family: POACEAE  
Genus: Lolium
Wetlands:Equally likely to occur in wetlands or non wetlands [U.S. Fish & Wildlife Service.]
Name Status:
Accepted by PLANTS + JM93
TJM2 accepted name: Festuca perennis
NOTE: Lolium perenne is not an active name in the Calflora species table.
More information about  Lolium perenne
UC Integrated Pest Management Weed Photo Gallery
(profile of this plant as an agricultural weed)

Records from the Consortium of California Herbaria

Original Publication citation (ITIS)


Search the International Plants Names Index

Search (Flora of North America)

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2016. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Oct 25, 2016).

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