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

一种欧洲海岸苔草，沿美国大西洋海岸归化；有葜性能茎。

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

水韭目有异型孢子，是多年水生。其管状条形叶密集簇生于粗短茎之上。