Although the name IUCN Red List of Threatened Species implies that the primary focus is at the species level, The IUCN Red List also includes assessments for some infra-ranks (subspecies and plant varieties) and subpopulations (sometimes referred to as ‘stocks’, these are geographically isolated subpopulations between which there is little genetic exchange).
Ideally, for such taxa to be included in The IUCN Red List, the global status of the species itself should also be assessed; in most instances this is the case. However, there are some cases, especially amongst the plants, where this has not yet been done and it may well be that some of these species warrant a threatened status.
The default search option on the website provides results at the species level only. Searches for subspecies, varieties and subpopulations must be specified separately. If a species assessment has any associated infra-rank or subpopulation assessments on The IUCN Red List, hyperlinks to those assessments are provided in the Taxonomy section of the species fact sheet. For example, for the Western Gorilla (Gorilla gorilla), the species fact sheet includes hyperlinks to separate assessments for the Cross River Gorilla (Gorilla gorilla diehli) and the Western Lowland Gorilla (Gorilla gorilla gorilla).