''Stenogyne campanulata'' is a rare species of flowering plant in the

mint family The Lamiaceae ( ) or Labiatae are a family of flowering plants commonly known as the mint, deadnettle, or sage family. Many of the plants are aromatic in all parts and include widely used culinary herbs like basil, mint, rosemary, sage, sav ...

known by the common name Kalalau Valley stenogyne. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

Hawaii Hawaii ( ; ) is an island U.S. state, state of the United States, in the Pacific Ocean about southwest of the U.S. mainland. One of the two Non-contiguous United States, non-contiguous U.S. states (along with Alaska), it is the only sta ...

, where it is known only from the

Kalalau Valley The Kalalau Valley is located on the northwest side of the island of Kauai in the state of Hawaii. The valley is located in the Nā Pali Coast State Park and houses the Kalalau Beach. The Nā Pali Coast is rugged and is inaccessible to automobi ...

on the island of

Kauai Kauai (), anglicized as Kauai ( or ), is one of the main Hawaiian Islands. It has an area of 562.3 square miles (1,456.4 km2), making it the fourth-largest of the islands and the 21st-largest island in the United States. Kauai lies 73 m ...

. It is a federally listed

endangered species An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching, inv ...

of the United States. This plant was first discovered in 1986 growing on a Kalalau Valley cliff in Na Pali Coast State Park, and it was described to science as a new species in 1989. As of 2006 there was only a single population containing about 50 individuals. The plant is threatened by habitat degradation caused by

feral pig A feral pig is a domestic pig The pig (''Sus domesticus''), also called swine (: swine) or hog, is an omnivorous, domesticated, even-toed, hoofed mammal. It is named the domestic pig when distinguishing it from other members of the g ...

s and introduced plant species such as air plant (''Kalanchoe pinnata'').USFWS
''Stenogyne campanulata'' Five-year Review.
June 2009.

References

campanulata Endemic flora of Hawaii Plants described in 1989 {{Lamiaceae-stub