Grass family (Poaceae) ⁷

Summary ⁷

Elymus repens is an aggressive, cool-season, perennial grass that is native to Eurasia. E. repens spreads by both seeds and rhizomes, and its long running rootstocks extend through the soil and send up numerous shoots, forming a loose but tough sod. Although it has been used for forage and erosion control, this grass now has a wide distribution and is one of the most difficult weeds to control in cultivated fields. [source: Invasipedia]

Recognition ⁷

Inflorescence: unbranched, with single spikelets attached to central axis
Base of leaf blade (where leaf clasps stem): narrow, membranous ligule with elongate, clasping auricles

Learn More ⁷

Invasipedia, Bugwood & The Nature Conservancy.
Turfgrass weed identification, Perdue University.
Cornell Weed Identification, Cornell University.
CABI Compendium.

Sources and Credits

1. (c) Alexander Baransky, some rights reserved (CC BY), uploaded by Alexander Baransky, https://www.inaturalist.org/observations/173718845
2. (c) Zdeňka Nováková, some rights reserved (CC BY), uploaded by Zdeňka Nováková, https://www.inaturalist.org/observations/27044490
3. (c) Сергей Морозо, some rights reserved (CC BY), uploaded by Сергей Морозо, https://www.inaturalist.org/observations/173413841
4. (c) Douglas Goldman, some rights reserved (CC BY), uploaded by Douglas Goldman, https://www.inaturalist.org/observations/106814859
5. (c) Erin Faulkner, some rights reserved (CC BY), uploaded by Erin Faulkner, https://www.inaturalist.org/observations/176935198
6. (c) Stanislav Murashkin, some rights reserved (CC BY), uploaded by Stanislav Murashkin, https://www.inaturalist.org/observations/172643181
7. (c) Isaac Winkler, some rights reserved (CC BY-SA)

More Info

• iNat taxon page
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• eFloras.org
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• Global Biodiversity Information Facility (GBIF)
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• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• Jepson eFlora
• Maryland Biodiversity Project
• NatureServe Explorer 2.0
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• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online
• 日本のレッドデータ検索システム
• 植物和名−学名インデックス YList

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