Westonbirt, The National Arboretum has a number of endangered or rare species that are listed in the IUCN Red Data List.
This IUCN Red Data List provides taxonomic, conservation status and distribution information on taxa that have been globally evaluated using the IUCN Red List categories and criteria.
The system is designed to determine the relative risk of extinction, and the main purpose of the IUCN Red List is to catalogue and highlight those taxa that are facing a higher risk of global extinction. The IUCN Red List also includes information on taxa that are categorized as extinct or extinct in the wild.
Westonbirt is currently home to 99 taxa on the Red List. Of these 13 are Critically Endangered, 37 Endangered and 49 Vulnerable. Take a look at the full list of Westonbirt's rare and endangered trees.
Extinct in the wild
A taxon is extinct in the wild when it is known only to survive in cultivation, in captivity or as a naturalized population (or populations) well outside the past range. A taxon is presumed extinct in the wild when exhaustive surveys in known and/or expected habitat, at appropriate times throughout its historic range have failed to record an individual.
Westonbirt Arboretum currently has no species categorised as extinct in the wild.
A taxon is critically endangered when the best available evidence indicates that it is facing an extremely high risk of extinction in the wild.
Westonbirt Arboretum has 13 tree species catergorised as critically endangered in the wild.
A taxon is endangered when the best available evidence indicates that it is facing a very high risk of extinction in the wild.
Westonbirt Arboretum has 37 tree species catergorised as endangered in the wild.
A taxon is vulnerable when the best available evidence indicates that it is facing a high risk of extinction in the wild.
Westonbirt Arboretum has 49 tree species catergorised as vulnerable in the wild.
Find out more
All of Westonbirt's rare and endangered trees can be found on the complete list.
For further details of how species are classified please visit the IUCN website.