Agrostis subulata is a grass (i.e., a member of the Poaceae family), which grows only on Campbell Island and on Antipodes Island in New Zealand.
Agrostis subulata is a perennial, densely tufted, clumping grass, with erect dull blue-green leaves which are taller than the spiked inflorescences.
It is found in herbfields, in Chionochloa antarctica grasslands and on peat covered rock ledges.
Agrostis subulata was first described in 1845 by Joseph Hooker in his Flora Antarctica.
In both 2009 and 2012 it was deemed to be "At Risk - Naturally Uncommon" under the New Zealand Threat Classification System, and this New Zealand classification was reaffirmed in 2018 (due to its restricted range).