Ngā Rauropi Whakaoranga

petako-pāraharaha, petako-rau-riki (names in Best 1908) 

Best gives both these names as "a fern", but no botanical name.

Williams 1971 says two other varieties of petako (Asplenium polyodon, sickle spleenwort) are known as petako-paraharaha and petako-rauriki.