the endemic flora includes plants like "pteris adscensionis", "asplenium ascensionis", "euphorbia origanoides" as well as the extinct species "oldenlandia adscensionis", "sporobolus durus" and "dryopteris ascensionis". "anogramma ascensionis" (ascension island parsley fern) was thought to have become extinct due to habitat loss, until four plants were found on the island in 2010. over 60 specimens were then successfully cultivated. portuguese explorers released goats in the 1500s which ate many species to extinction. the later introduction of rabbits, sheep, rats and donkeys, and over 200 imported species further marginalised the original flora.