This is a universal constituent grass of saltmarshes around the coast, and also on rocky shores in crevices and clefts of rock.
All names: Puccinellia maritima (Huds.)Parl.; Glyceria burdoni Druce; Glyceria festuciformis auct.; Glyceria maritima (Huds.) Wahlb.; Sclerochloa maritima (Huds.) Lindl. ex Bab.; Sclerochloa festuciformis Britten & Rendle pro parte; Poa maritima Huds.