It is endemic to Hawaii, where it is known only from the Koʻolau Mountains on the island of Oahu.

It is a shrub growing 2 to 3 meters tall and bearing white flowers.

[1] The habitat is degraded by a number of forces, including exotic plant species such as Koster's curse (Clidemia hirta), feral pigs, and military activity.

The phenomenon of genetic pollution may be a threat to the species, in this case.

More populations of this plant may exist in dense or inaccessible areas of the forest which have not been surveyed.