Sword grass

From Wikipedia, the free encyclopedia

This article does not cite any references or sources. (May 2008) Please help improve this article by adding citations to reliable sources. Unverifiable material may be challenged and removed.

Sword grass is a name used for some species of grasses with blades that are sharp enough to cut human skin. This is because they contain many silica phytoliths, a hardening material in many plants. The sharp blades help to discourage herbivores from grazing, protecting the grasses around it as well.