About Gahnia setifolia (A.Rich.) Hook.f.
Gahnia setifolia, with the full scientific name Gahnia setifolia (A.Rich.) Hook.f., has common names including mapere, gahnia, giant gahnia, and razor sedge. It is a native sedge species endemic to New Zealand. It can be found across the entire North Island and the northernmost part of the South Island of New Zealand.