Cyanea st.-johnii (Hosaka) Lammers, Givnish & Systma

Cyanea st.-johnii (Hosaka) Lammers, Givnish & Systma. Cyanea st.-johnii is a rare species of flowering plant in the bellflower family known by the common name St. John's rollandia. It is endemic to Oahu, where it is known only from the Koʻolau Mountains. It is a federally listed endangered species of the United States. Like other Cyanea it is known as haha in Hawaiian.