Poa costiniana

About

Poa costiniana, also known as bog snow-grass and prickly snow-grass, is a species of grass in the genus Poa. It is an tussock-forming alpine snow grass that is widespread in high-elevation environments, where it is especially common in damp habitats and may form dense, nearly pure swards. The species was discovered by Joyce Winifred Vickery.

Summary from Wikipedia