Eryngium chamissonis

About

Eryngium pandanifolium, or pandan-like-leaved eryngo or caraguata, is a species of flowering plant in the genus Eryngium of the family Apiaceae, native to southern Brazil, Paraguay, Uruguay, and Argentina, and introduced in Australia, New Zealand, and Portugal. It has gained the Royal Horticultural Society's Award of Garden Merit. Its leaves, which closely resemble those of the unrelated Pampas grass (Cortaderia) are up to 2.7 m long while only 2.5 to 5 cm wide.

Summary from Wikipedia