Fen Sedge

Cladium mariscus is a tall sedge species with serrated leaf edges, commonly found in wetland habitats. The plant has been historically significant for construction purposes, particularly in thatched roofing. Its native range includes temperate Europe and Asia, and it has been recorded in various biogeographic regions. The species was previously referred to as elk sedge. The name was published in 1809. Some taxonomic discussion exists regarding the type locality, with historical references to Gotland, though no direct association with specimens from that location is noted in the type collection.