Austrostipa stipoides

About

Austrostipa stipoides, commonly known as prickly spear-grass or coast spear-grass, is a kind of tussock grass native to the coasts of south-eastern Australia and of New Zealand. It forms large clumps up to about 80 cm in height with smooth inrolled leaves 70 cm long and 1 mm wide with sharp tips. It is found on sea cliffs, the edges of beach dunes and salt marshes and tolerates strong winds and sea spray.

Summary from Wikipedia