Coprosma petriei, (commonly Mirrorplant) is a mat-forming shrub native to New Zealand (with which it is associated), Polynesia, Australia, the Juan Fernández Islands and Hawaiʻi. It is a hardy wind pollinated plant that is 0.1 m (4 in) by 0.5 m (20 in). Seeds mature in August and the plants only produce either male or female seeds; they are not self-fertilizing.