Polystichum proliferum, commonly known as mother shield fern is an Australian endemic fern. Endemic plants include the endangered Aleutian shield fern. Other common names include leathery shieldfern, iron fern, 7-weeks-fern, and climbing shield fern. Hard shield fern, red campion and herb bennet grow in abundance. The Aleutian shield fern is an endangered species found only on this island.