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Montana Field Guide

Montana Field Guides

Persian Ryegrass - Lolium persicum

Non-native Species

Global Rank: GNR
State Rank: SNA

Agency Status
USFWS:
USFS:
BLM:
MNPS Threat Rank:
C-value: 1

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General Description
Annual bunchgrass. Stems 10–40 cm. Leaves: blades 2–6 mm wide. Inflorescence 10–25 cm long. Spikelets 10–26 mm long, glumes about as long as the spikelet length. Lemmas: 4 to 9 per spikelet, with a slender flexuous awn 5–15 mm long (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Range Comments
Introduced along the southern tier of Canadian provinces and sporadically south into mainly NY, MT, ND, WY and CO (Lavin in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 4

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density

Recency

 

(Observations spanning multiple months or years are excluded from time charts)



Habitat

References
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Citation for data on this website:
Persian Ryegrass — Lolium persicum.  Montana Field Guide.  .  Retrieved on , from