Plants : PoaceaeFerns and Flowering Plants

Leymus arenarius (L.) Hochst.

Lyme-grass

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Leymus arenarius

Description: This is a robust blueish-green grass with a thick spiky head of florets. Rare, but increasing, on the upper parts of sandy beaches, associated with the zone of couch-grass (Elytrigia repens). Its increase over the past thirty years may be linked to a warming-up of the climate of the Irish Sea basin.

All names: Leymus arenarius (L.) Hochst.; Elymus arenarius L.

Distribution Map from NBN: Leymus arenarius at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Leymus arenarius at iNaturalist World Species Observations database.

 Hackney, P., 2026. Leymus arenarius. (L.) Hochst.. [In] Flora of Northern Ireland.
https://habitas.org/flora/species.php?item=2598. Accessed on 2026-11-02.