Post by Melanie on Sept 10, 2016 10:59:05 GMT 1
Scientific Name: Cyanea linearifolia
Species Authority: Rock
Taxonomic Source(s): Wagner, W.L., Herbst, D.R. and Lorence, D.H. 2005 onwards. Flora of the Hawaiian Islands website. Available at: botany.si.edu/pacificislandbiodiversity/hawaiianflora/index.htm.
Identification information: Stem simple, 2-2.5m. (6-7 ft.) high; crowned by the narrow, linear, glabrous leaves, 28-33 cm long, 3-6mm wide, with revolute margins; racemes glabrous, 6-7 cm. long, with small deciduous bracts in the upper third, 10-12 flowered, the flowers on 12-15 mm. long filiform pedicels calyx globose to campanulate glabrous, the calycine teeth minute; corolla (color?) glabrous, 15 mm. long, probably 20 mm. when mature; fruit unknown. (Rock)
Assessment Information [top]
Red List Category & Criteria: Extinct ver 3.1
Year Published: 2016
Date Assessed: 2016-06-22
Assessor(s): Clark, M.
Reviewer(s): Walsh, S.
Contributor(s): Nyberg, B. & Wood, K.
Justification:
Cyanea linearifolia is assessed as Extinct and was last recorded in the wild in 1957. It is thought that the species went extinct due to the impacts of alien invasive species.
Geographic Range [top]
Range Description: Cyanea linearifolia was known only from the type collection by Lydgate, which was collected in the Wahiawa Mountains of Kauaʻi. A "rediscovery" of a similar Cyanea in 1991 was later determined by Thomas Lammers to in fact be a new, previously undescribed species which was named Cyanea kuihewa. No extant individuals C. linearifolia are known today.
Countries occurrence:
Regionally extinct:
United States (Hawaiian Is.)
Additional data:
♦ Estimated area of occupancy (AOO) - km2: 0
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: No extant individuals of Cyanea linearifolia are known.
Additional data:
♦ Number of mature individuals: 0
Habitat and Ecology [top]
Habitat and Ecology: The taxon is a shrub formally found in lowland wet forests on Kauaʻi.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Threats [top]
Major Threat(s): This taxon is extinct, probably due to inavasve species threats which still exist in the area.
Conservation Actions [top]
Conservation Actions: Cyanea linearifolia is not listed by the U.S. Fish and Wildlife Service as it may have been extirpated before the Endangered Species Act was implemented.
www.iucnredlist.org/details/91172297/0
Species Authority: Rock
Taxonomic Source(s): Wagner, W.L., Herbst, D.R. and Lorence, D.H. 2005 onwards. Flora of the Hawaiian Islands website. Available at: botany.si.edu/pacificislandbiodiversity/hawaiianflora/index.htm.
Identification information: Stem simple, 2-2.5m. (6-7 ft.) high; crowned by the narrow, linear, glabrous leaves, 28-33 cm long, 3-6mm wide, with revolute margins; racemes glabrous, 6-7 cm. long, with small deciduous bracts in the upper third, 10-12 flowered, the flowers on 12-15 mm. long filiform pedicels calyx globose to campanulate glabrous, the calycine teeth minute; corolla (color?) glabrous, 15 mm. long, probably 20 mm. when mature; fruit unknown. (Rock)
Assessment Information [top]
Red List Category & Criteria: Extinct ver 3.1
Year Published: 2016
Date Assessed: 2016-06-22
Assessor(s): Clark, M.
Reviewer(s): Walsh, S.
Contributor(s): Nyberg, B. & Wood, K.
Justification:
Cyanea linearifolia is assessed as Extinct and was last recorded in the wild in 1957. It is thought that the species went extinct due to the impacts of alien invasive species.
Geographic Range [top]
Range Description: Cyanea linearifolia was known only from the type collection by Lydgate, which was collected in the Wahiawa Mountains of Kauaʻi. A "rediscovery" of a similar Cyanea in 1991 was later determined by Thomas Lammers to in fact be a new, previously undescribed species which was named Cyanea kuihewa. No extant individuals C. linearifolia are known today.
Countries occurrence:
Regionally extinct:
United States (Hawaiian Is.)
Additional data:
♦ Estimated area of occupancy (AOO) - km2: 0
Range Map: Click here to open the map viewer and explore range.
Population [top]
Population: No extant individuals of Cyanea linearifolia are known.
Additional data:
♦ Number of mature individuals: 0
Habitat and Ecology [top]
Habitat and Ecology: The taxon is a shrub formally found in lowland wet forests on Kauaʻi.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Threats [top]
Major Threat(s): This taxon is extinct, probably due to inavasve species threats which still exist in the area.
Conservation Actions [top]
Conservation Actions: Cyanea linearifolia is not listed by the U.S. Fish and Wildlife Service as it may have been extirpated before the Endangered Species Act was implemented.
www.iucnredlist.org/details/91172297/0
