European maritime sedge naturalized along Atlantic coast of United States; rootstock has properties of sarsaparilla.

一欧洲的海岸苔草，沿美国大西洋海岸归化；具有菝葜性能的茎。

Quillworts are heterosporous, mainly aquatic perennials, with a dense rosette of tubular quill-like leaves arising from a short, stout rootstock.

水韭目的植物具有异型孢子，是多年水生植物。其管状条集簇生于粗短的茎之上。