Ilex aquifolium L.
Source: Wikipedia
Synonyms 47
- 778,928 GBIF occurrences
- 80,520 iNaturalist observations
This is a common and widespread species throughout most of its range, except in Sweden where only one indigenous individual remains. In Denmark it is scattered, mostly in the southwest, while in Norway it only grows out on the more oceanic parts of Vestland. The species is missing in other Nordic countries (Gärdenfors 2010).
A hardy deciduous or evergreen shrub up to ten metres tall with spiny leaves, Ilex aquifolium produces red berries in autumn. It is found in beech and oak woodland as a dominant understorey shrub. It is also found in scrub, hedgerow, rocky places, gardens and urban areas. It is a pioneer species but is considered to be invasive in the USA (Blamey and Grey-Wilson 2003, JNCC 2012, Botanical Society of Britain and Ireland 2024).
The susceptibility of Holly to browsing can limit its regeneration (Botanical Society of Britain and Ireland 2024). Regeneration of Holly is sensitive to drought during both the seedling and the adult stage (Walther et al. 2005). In Croatia it has declined due to collection from the wild (Nikolic and Topic 2007). Threats to the species are unlikely to significantly impact the population.
This species is listed on the following national red lists as Least Concern: Denmark (NERI 2007), Germany (Ludwig and Schnittler 1996), Luxembourg (Colling 2005), Norway (Solstad 2021), Switzerland (Moser et al. 2002) and the UK (Cheffings and Farrell 2005). It is listed as Critically Endangered in Sweden due to its extremely small population size, but it is also found as an escapee through cultivation (SLU ArtDatabanken 2023, Gärdenfors 2010). It is listed as Vulnerable under criterion A1d in Croatia (Nikolic and Topic 2007). It occurs in seventy-six Natura 2000 sites in Spain and three in France (European Environment Agency 2010), as well as some Natura 2000 sites in Portugal (UNEP-WCMC and IUCN 2023). The habitat 9380 "Forests of Ilex aquifolium" is listed under Annex I of the Habitats Directive.
European regional assessment: Least Concern (LC)EU 27 regional assessment: Least Concern (LC)Holly (Ilex aquifolium) is classified as Least Concern due to its widespread distribution, stable population trend, and the fact that it currently faces no major threats.