Pteralyxia kauaiensis, also called Kaulu or Kauaʻi pteralyxia,[2] is a species of plant in the family Apocynaceae.

It is endemic to the island of Kauaʻi in the Hawaiian Islands.

It is threatened by habitat loss and degradation.

[1] It is federally listed as an endangered species of the United States.

This Apocynaceae article is a stub.