# Sword grass

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> Source: https://en.wikipedia.org/wiki/Sword_grass
> Source revision: 841149528
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**Sword grass** may refer to:

- Some species of [grasses](/source/Poaceae) with blades that are sharp enough to cut human skin (this is because they contain many [silica](/source/Silica) [phytoliths](/source/Phytolith), a hardening material in many plants. The sharp blades help to discourage herbivores from grazing (also protecting the grasses around it)), including: - *[Gahnia](/source/Gahnia)* species - *[Imperata cylindrica](/source/Imperata_cylindrica)* (cogon grass) - *[Poa ensiformis](/source/Poa_ensiformis)*
- Moths and butterflies: - *[Xylena exsoleta](/source/Xylena_exsoleta)* (sword-grass) - *[Xylena vetusta](/source/Xylena_vetusta)* (red sword-grass) - *[Tisiphone abeona](/source/Tisiphone_abeona)* (sword-grass brown) - *[Tisiphone helena](/source/Tisiphone_helena)* (northern sword-grass brown)

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Adapted from the Wikipedia article [Sword grass](https://en.wikipedia.org/wiki/Sword_grass) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Sword_grass?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.