Tetramolopium filiforme

Tetramolopium filiforme is a rare species of flowering plant in the aster family known by the common name ridgetop tetramolopium. It is endemic to Hawaii, where it is known only from the Waianae Mountains on the island of Oahu. It is threatened by habitat degradation caused by feral goats and introduced species of plants. It is a federally listed endangered species of the United States.