| Kingdom | Phylum | Class | Order | Family |
|---|---|---|---|---|
| PLANTAE | TRACHEOPHYTA | MAGNOLIOPSIDA | RUBIALES | RUBIACEAE |
| Scientific Name: | Oldenlandia adscensionis |
| Species Authority: | (DC.) Cronk |
| Synonym/s: |
Hedyotis adscensionis DC.
Oldenlandia adscenionis (DC.) Cronk [orth. error]
|
| Red List Category & Criteria: | Extinct ver 3.1 |
| Year Assessed: | 2003 |
| Assessor/s: | Gray, A. |
| Reviewer/s: | Cronk, Q. & Cairns-Wicks, R. (South Atlantic Island Plants Red List Authority) |
|
Justification: O. adscensionis was formerly found on Green Mountain on the northern and western slopes between 356 m and 680 m but has not been seen since Gordon found it in 1889 (Cronk 1980). A sighting in 1985 (Cronk 2000) remains unconfirmed as no specimen was collected or photographed. The last assessment (Cronk 1980) listed this species as extinct, no further records have surfaced despite searches in 1998 and 2002, therefore due to the lack of evidence for the persistence it is suggested that O. adscensionis should continue to be regarded as extinct. If specimens of this species are extant then they are likely to be ephemeral in nature and very susceptible to grazing mammals. The large-scale introductions of exotic plant species and browsing by goats are thought to have contributed to the demise of this species (Cronk 1980). |
|
| Range Description: | Known only from Ascension Island, South Atlantic Ocean. |
| Countries: |
Regionally extinct:
Saint Helena (Ascension)
|
| Habitat and Ecology: | Previously recorded in the lowland dry and upland moist habitats on Ascension Island. |
| Systems: | Terrestrial |
| Major Threat(s): | Introduced plants have completely replaced the original vegetation communities and livestock (sheep and donkeys now present) goats were likely to have been historically responsible for the decline. |
| Conservation Actions: | The species needs to be searched for, a plant matching the description was found near Devil’s Riding School in 1985 but no specimen was collected and the plant had disappeared by 1986 (Cronk 2000). |
| Citation: | Gray, A. 2003. Oldenlandia adscensionis. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 07 February 2012. |
| Disclaimer: | To make use of this information, please check the <Terms of Use>. |
| Feedback: | If you see any errors or have any questions or suggestions on what is shown on this page, please fill in the feedback form so that we can correct or extend the information provided |
