Stephen Dalton / Close-up of holly leaf (Ilex aquifolium).

Sylvain Cordier / European holly ( Ilex aquifolium) , female tree with red fruits, Haut Rhin, France.

Cyril Ruoso / Holly (Ilex aquilfolium) in winter frost, Alberes Mountains, Pyrenees, France, February.

Cyril Ruoso / Woodland scene from above with Holly (Ilex aquilfolium) colonizing meadow, Alberes Mountains, Pyrenees, France, October 2011.

Cyril Ruoso / Woodland scene from above with Holly (Ilex aquilfolium) the first species to colonize the adjacent meadow, Alberes Mountains, Pyrenees, France, October 2011.

Cyril Ruoso / Holly (Ilex aquilfolium) colonizing meadow adjacent to woodland, Alberes Mountains, Pyrenees, France, March 2011.

Matthew Maran / Holly leaf (Ilex aquifolium). Hampstead Heath, London, England, UK. October.

Mike Read / English oak (Quercus robur) and Holly (Ilex aquifolium) Brately Wood, New Forest National Park, Hampshire, England, UK, March.

Colin Varndell / Fresh Holly leaf (Ilex aquifolium) in spring. Dorset, UK, May.

Kim Taylor / Leafcutter bee (Megachile sp.) female returning to its nest, a dead Holly tree (Ilex aquifolium), with a leaf. The animal enters frame and places the leaf on the inside of the nest entrance. Guildford...

Mike Read / Pedunculate oak (Quercus robur) woodland with Holly (Ilex aquifolium) growing in understorey. Dartmoor National Park, Devon, UK. October.

Colin Varndell / Holly (Ilex aquifolium) in flower. Dorset, UK May 2018