Steve Downer / Timelapse of Sycamore tree (Acer pseudoplatanus) leaves developing, UK. March. Controlled conditions.

Nick Upton / Sycamore tree (Acer pseudoplatanus) flowers, Wiltshire, UK, May.

Nick Upton / Sycamore tree (Acer pseudoplatanus) flowers, Wiltshire, UK, May.

Matthew Maran / Sycamore (Acer pseudoplatanus) veteran tree, Devon, UK, July.

Graham Eaton / Hadrian's Wall at Sycamore Gap, between Steel Rigg and Housesteads, Northumberland, England, UK, March 2017.

Graham Eaton / Sycamore (Acer pseudoplatanus) in Sycamore Gap, Hadrian's Wall. The wall is constructed on The Whin Sill, a layer of hard intrusive, volcanic Dolerite. Between Steel Rigg and Houseteads, Northumberlan...

Sylvain Cordier / Sycamore (Acer pseudoplatanus) seeds, Alsace, France

Colin Varndell / Sycamore (Acer pseudoplatanus) blossom, Dorset, UK. May.

Nick Upton / Sycamore tree (Acer pseudoplatanus) flowers, Wiltshire, UK, May.

Ann & Steve Toon / Sycamore (Acer pseudoplatanus) gap, Hadrian's Wall, Northumberland, UK, August

Ann & Steve Toon / Sycamore (Acer pseudoplatanus) gap, Hadrian's Wall, Northumberland, UK, August

MYN / Niall Benvie / Emerging Sycamore leaves (Acer pseudoplatanus) Scotland, UK, May.

MYN / Niall Benvie / Emerging Sycamore leaves (Acer pseudoplatanus) Scotland, UK, May.

Mike Read / Sycamore (Acer pseudoplatanus) cut out on white background, showing Tar-spot fungus (Rhytisma acerinum).

Chris Mattison / Sycamore (Acer pseudoplatanus) seeds, Dumfries and Galloway, Scotland, UK, June.

Colin Varndell / Sycamore (Acer pseudoplatanus) bud breaking. Dorset, UK April.

Colin Varndell / Sycamore blossom (Acer pseudoplatanus) Dorset, UK May.

Colin Varndell / Sycamore (Acer pseudoplatanus) bud bursting in spring, Dorset, UK, April.

Alex Hyde / Sycamore bark (Acer pseudoplatanus) on a mature tree. Peak District National Park, Derbshire, UK. April.

Colin Varndell / Sycamore (Acer pseudoplatanus) blossom in flower. Dorset, UK April.

Chris Mattison / Sycamore tree (Acer pseudoplatanus) growing on limestone pavement, Lancashire, UK. May.

Chris Mattison / Sycamore tree (Acer pseudoplatanus), growing on limestone pavement, Lancashire, UK. May.

Chris Mattison / Sycamore tree (Acer pseudoplatanus), growing on limestone pavement, Lancashire, UK. May.

Colin Varndell / Sycamore (Acer pseudoplatanus) bud opening in spring. Dorset, UK, April.

Colin Varndell / Fresh sycamore (Acer pseudoplatanus) leaves in spring. Dorset, UK, April.

Nick Upton / Winged seeds of Sycamore tree (Acer pseudoplatanus), Wiltshire, UK, October.

Chris Mattison / Sycamore seeds (Acer pseudoplatanus) Dumfries, Scotland, UK, June.

Alex Hyde / Sycamore (Acer pseudoplatanus) leaves backlit. Peak District National Park, Derbyshire, UK, May.

Chris Mattison / Sycamore (Acer pseudoplatanus) and dry stone walls, near Monyash, Derbyshire, England, UK, May 2013.

Ernie Janes / Sycamore (Acer pseudoplatanus) new leaves and buds growing.

Adrian Davies / Seed of a Sycamore (Acer pseudoplatanus) tree falling in autumn. Long exposure

Colin Varndell / Sycamore (Acer pseudoplatanus) leaf veins detail, Dorset, UK. April.

Colin Varndell / Sycamore (Acer pseudoplatanus) spring blossom and foliage, Dorset, UK. April. Controlled conditions.

Colin Varndell / Sycamore (Acer pseudoplatanus) bud breaking open to reveal blossom, Dorset, UK. April. Controlled conditions.

Laurie Campbell / Harthope Burn in spring surrounded by Alder (Alnus sp.), Sessile oak (Quercus petraea) and Sycamore (Acer pseudoplatanus) trees, Harthope Valley, Cheviot Hills, Northumberland National Park, Northumbe...

Adrian Davies / Sycamore tree (Acer pseudoplatanus) hollow stump of fallen tree, Sussex, UK. September.

Adrian Davies / Fallen Sycamore tree (Acer pseudoplatanus) with hollow stump, Sussex, UK. September.

John Waters / Wooded glade with stream and banks covered with Primroses (Primula vulgaris) and gnarled Sycamore tree (Acer pseudoplatanus), Island of Hoy, Orkney, Scotland, UK, May 2021.

Colin Varndell / Sycamore (Acer pseudoplatanus) bud breaking in spring, Dorset, UK, April.

Colin Varndell / Tar spot fungus (Rhytisma acerinum) on a sycamore (Acer pseudoplatanus) leaf. Dorset, UK, September.

Ross Hoddinott / Red Admiral butterfly (Vanessa atalanta) basking on a Sycamore leaf (Acer pseudoplatanus) in morning light, Broxwater, Cornwall, UK. August .

Nick Upton / Sycamore (Acer pseudoplatanes) winged seeds maturing, Wiltshire, UK, September.

Nick Upton / Sycamore (Acer pseudoplatanes) winged seeds maturing, Wiltshire, UK, September.

Robin Chittenden / Sycamore (Acer pseudoplatanus) flowering. Thorpe Marshes, Norwich, Norfolk, England, UK. April.

Guy Edwardes / Sycamore Gap silhouetted at night, Milky Way above. Hadrian's Wall, Northumberland National Park, Northumberland, England, UK. December 2018.

Nigel Cattlin / Sycamore leafhopper (Edwardsiana nigroloba) nymph on the underside of a Sycamore (Acer pseudoplatanus) leaf, Devon, July

Nigel Cattlin / Colony of Gall mites (Aceria pseudoplatani) on the underside of a Sycamore (Acer pseudoplatanus) leaf, Devon, July

Adrian Davies / Sycamore (Acer pseudoplatanus) seed, backlit