Carex sedge
Carex wahuensis,
Endemic
Carex is a native sedge found on most of the main Hawaiian islands. Today, much of the ground cover around you consists of non-native grasses and weeds, but the few carex among them give us a hint as to what the area looked like before human impacts. There is no known Hawaiian name for this plant, though it is certain that Hawaiians knew of this plant as it was much more numerous in the past.