Phyllostegia glabra

Phyllostegia glabra is a species of flowering plant in the mint family known by the common name smooth phyllostegia.[1] It is endemic to Hawaii.[1]

Phyllostegia glabra

Vulnerable  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Phyllostegia
Species:
P. glabra
Binomial name
Phyllostegia glabra
Synonyms[2]
  • Phyllostegia chamissonis Benth.
  • Phyllostegia macraei Benth.
  • Phyllostegia rubritincta H.St.John
  • Prasium glabrum Gaudich.

Known varieties include Phyllostegia glabra var. glabra and P. g. var. lanaiensis,[1][3]: 47688  the latter being a perennial herb with dentate leaves, often reddish or red-veined, and white flowers, occasionally tinged with purple, distinguished from P. g. var. glabra by its shorter calyx and narrower leaves.[3]: 47688  As of 2021, NatureServe lists P. g. var. glabra as vulnerable[4] and P. g. var. lanaiensis as possibly extinct.[5]

In September 1991, the United States Fish and Wildlife Service (FWS) listed Phyllostegia glabra var. lanaiensis as an endangered species,[3]: 47694  stating that it had not been seen since a single plant was sighted on Lanai in the 1980s.[3]: 47688  The variety may still exist on the island, perhaps in rugged habitat that has not been surveyed recently.[3]: 47688  In September 2021, FWS stated that the last confirmed sighting of P. g. var. lanaiensis occurred in 1914 and proposed that the variety be declared extinct and stricken off the endangered species list.[6]

References
  1. "Phyllostegia glabra". explorer.natureserve.org. NatureServe. 2021-09-03. ELEMENT_GLOBAL.2.152578. Retrieved 2021-09-30.
  2. "Phyllostegia glabra (Gaudich.) Benth". The Plant List: A Working List of All Plant Species. Version 1.1. 2012-03-23. Archived from the original on 2020-07-27. Retrieved 19 June 2016.
  3. Herbst, Derral R.; United States Fish and Wildlife Service (September 20, 1991). "Endangered and Threatened Wildlife and Plants; Determination of Endangered Status for Six Plants from the Island of Lanai, Hawaii" (PDF). Federal Register. 56 (183): 47686–47695. Retrieved 2021-09-30.
  4. "Phyllostegia glabra var. glabra". explorer.natureserve.org. NatureServe. 2021-09-03. ELEMENT_GLOBAL.2.144867. Retrieved 2021-10-01.
  5. "Phyllostegia glabra var. lanaiensis". explorer.natureserve.org. NatureServe. 2021-09-03. ELEMENT_GLOBAL.2.137215. Retrieved 2021-10-01.
  6. "U.S. Fish and Wildlife Service Proposes Delisting 23 Species from Endangered Species Act Due to Extinction" (Press release). United States Fish and Wildlife Service. September 29, 2021. Archived from the original on 2021-09-29. Retrieved 2021-09-30.


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