''Phyllostegia hillebrandii'', commonly known as Hillebrand's phyllostegia, is an extinct species of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

in the mint family,

Lamiaceae 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, savory ...

. The name was first used by

Horace Mann Jr. Horace Mann Jr. (February 25, 1844 – 1868) was an American Botany, botanist, son of Horace Mann. His mother was one of the famous Peabody Sisters Mary Tyler Peabody Mann. Mentored in botany by Henry David Thoreau, whom he accompanied on an expe ...

in a list of Hawaiian plants published in 1869. It was first described (posthumously) by William Hillebrand in his ''Flora of the Hawaiian Islands'', published in 1888. The species is thought to have gone

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

, although this can't be officially ruled out. It was

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 the island of

Maui The island of Maui (; Hawaiian: ) is the second-largest of the islands of the state of Hawaii at 727.2 square miles (1,883 km2) and is the 17th largest island in the United States. Maui is the largest of Maui County's four islands, which ...

, primarily the

eastern region Eastern Region or East Region may refer to: * Eastern Region (Abu Dhabi): Al Ain *Eastern Region, Ghana *Eastern Region (Iceland) *Eastern Region, Nepal *Eastern Region, Nigeria * Eastern Region, Serbia * Eastern Region, Uganda * Eastern Region of ...

, where it was threatened by alien invasive species and

deforestation Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated d ...

. The last specimens were collected sometime before 1871.

References

hillebrandii {{Lamiaceae-stub