David Woodfall / Sessile oak (Quercus petraea) tree with sunlight behind, ancient semi natural woodland in Gilfach Nature Reserve, Radnorshire Wildlife Trust, Powys, Wales, UK May

Peter Cairns / 2020VISION / Sessile Oak tree (Quercus petraea) in spring, Sunart Oakwoods, Ardnamurchan, Highland, Scotland, UK, May. 2020VISION Book Plate.

David Woodfall / Sessile Oak (Quercus patraea) in mist. Gilfach Farm SSSI, Radnorshire Wildlife Trust, Wales, UK, November.

Alan Watson / Moss-covered Oak trees (Quercus petraea) and boulders, Tomies Wood, Killarney National Park, County Kerry, Republic of Ireland, Europe

Simon Colmer / Sessile oak (Quercus petraea) buds in winter, UK

Will Watson / Ancient Sessile Oak (Quercus petrea) woodland and sheep pasture in autumn colour and the Ffridd; open land with acid grassland, bracken, exposed rock and scrub in the background, Brecon Beacons Nation...

Andres M. Dominguez / Sessile oak woodland (Quercus petrea) Muniellos National Park, Asturias, Spain. October

Will Watson / Snow scene from Lower Brockhampton, with Sessile Oak (Quercus petrea) track and farm gate, Herefordshire, England, UK, December.

Laurie Campbell / Sessile / Durmast oak (Quercus petraea) acorns in late summer, Ford Moss local nature reserve, Northumberland, August.

Andres M. Dominguez / Sessile oaks (Quercus petraea) and Beech trees (Fagus sylvatica) in winter, Muniellos National Park, Asturias, Spain. April

Adrian Davies / Sessile oak (Quercus petraea) leaf with raindrops. North Wales, October.

SCOTLAND: The Big Picture / Sessile oak (Quercus petraea) covered in moss and lichen, Rahoy Hills, Morvern, Ardnamurchan, Scotland, UK, June 2017