Gardenia mannii
Gardenia mannii, the nānū, Oahu gardenia or Mann's gardenia, is a species of flowering tree in the coffee family, Rubiaceae, that is endemic to the island of Oahu in Hawaii. It inhabits coastal mesic, mixed mesic, and wet forests at elevations of  in the Koolau and Waianae Ranges. It is threatened by habitat loss. There are 18 populations remaining with a total of no more than 110 individuals. References

mannii
Trees of Hawaii
Endemic flora of Hawaii
Critically endangered plants
Taxonomy articles created by Polbot
Taxa named by Harold St. John