''Phyllostegia knudsenii'' is a rare species of flowering plant in the
mint family known by the common name Waimea phyllostegia and Knudsen's phyllostegia. It is
endemic
Endemism is the state of a species being found 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 found elsew ...
to
Hawaii
Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...
, where it is known only from the island of
Kauai
Kauai, () anglicized as Kauai ( ), is geologically the second-oldest of the main Hawaiian Islands (after Niʻihau). With an area of 562.3 square miles (1,456.4 km2), it is the fourth-largest of these islands and the 21st largest island ...
.
[''Phyllostegia knudsenii''.]
The Nature Conservancy. 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 and inv ...
of the United States.
This is a perennial herb or vine with limp leaves up to 18 centimeters long by 9 wide. The flowers are just under a centimeter long.
[USFWS]
Determination of Endangered or Threatened status for Nineteen Plant Species From the Island of Kauai, Hawaii.
''Federal Register'' October 10, 1996.
This plant was first collected in the 19th century and was not seen again until 1993, when a single plant was found.
[ Three more were found later that year. Four additional plants were found in 1999 and five immature plants were located in 2001. There may be up to fifty plants remaining in unsurveyed areas.][USFWS]
''Phyllostegia knudsenii'' Five-year Review.
June 2009.
References
External links
{{Taxonbar, from=Q7189371
knudsenii
Endemic flora of Hawaii