John Shaw / Hybrid Poplar tree plantation in autumn (Populs sp.). Boardman Tree Farm, near Irrigon, Oregon, USA. October.

Stephen Dalton / Maple (Acer sp) leaves in autumn

Merryn Thomas / Maple leaves (Acer sp), UK. October 2009.

Steve Gettle / Maple (Acer sp) tree in autumn, Pictured Rocks National Lakeshore, Michigan

Scott Leslie / Red Maple (Acer rubrum) trees and river, Mersey River, Medway Lakes Wilderness Area, Nova Scotia, Canada

Jeff Foott / Maple (Acer sp) leaves and needles in autumn, Acadia National Park, Maine

Kevin Schafer / Pine (Pinus sp) and Japanese Maple (Acer palmatum) trees in autumn, Ginkakuji Gardens, Kyoto, Japan

Tim Fitzharris / Little Pigeon River cascading among rocks and colorful Maple leaves, Great Smoky Mountains National Park, Tennessee

Jim Brandenburg / Maple (Acer sp) leaf in pond, Minnesota

Adrian Davies / Fossilised winged seed (samara) seed (Acer sp.) from the Oligocene epoch, approx. 30 miilion years ago, Alpes de Haute-Provence, France.

Konrad Wothe / Blue butterfly (Polyommatus sp.) resting on Buttercup (Ranunculus acris), Mount Baldo, Italy, Europe. June.

Linda Pitkin / Autumn leaves including Sweet gum (Liquidambar styraciflua); Hawthorn (Crataegus monogyna); Tutsan (Hypericum androsaemum); Norway maple (Acer platanoides); Prunus sp and Strawberry tree (Arbutus uned...

Jussi Murtosaari / Red squirrel (Sciurus vulgaris) feeding on Maple (Acer sp) seeds in tree. Jyvaskyla, Central Finland. November.

Jussi Murtosaari / Red squirrel (Sciurus vulgaris) feeding on Maple (Acer sp) seeds in tree. Jyvaskyla, Central Finland. November.

Jack Dykinga / Sycamore (Acer sp) and Cottonwood (Populus sp) trees lining dry creek bed, rhyolite cliffs above. Cave Creek Canyon, Chiricahua Mountains, Coronado National Forest, Arizona, USA. November 2019.

Jack Dykinga / Yucca (Yucca schottii) with Sycamore (Acer sp) and Ash (Fraxinus sp) in autumn foliage in background. Cave Creek Canyon, Chiricahua Mountains, Coronado National Forest, Arizona, USA. November 2019.

Oliver Hellowell / Maple leaves (Acer sp) in autumn, Westonbirt, England, UK.

Oliver Hellowell / Maple leaf (Acer sp) which is ragged in autumn, Tennessee, November.

Robert Thompson / Maple / Sycamore (Acer sp) bud opening, Republic of Ireland. April.

Cyril Ruoso / Maple (Acer sp) leaf hanging in the air on a Spider (Araneae) web strand, Picardy, France, October.

Adrian Davies / Fallen Maple leaves (Acer sp.) in autumn

Tony Wu / Japanese maple (Acer sp) leaves, showing autumn foliage. Near Lake Kawaguchi-ko, Yamanashi Prefecture, Japan, November.

Tony Wu / California maple aphid (Periphyllus californiensis) adult female with a cluster of nymphs gathered on the underside of a Japanese maple (Acer sp.) leaf in the autumn. Kanagawa, Japan.

Cyril Ruoso / Maple (Acer sp) tree in a Japanese cedar (Cryptomeria japonica) plantation, Kansai Region, Japan, November 2008.

Cyril Ruoso / Maple (Acer sp) tree in a Japanese cedar (Cryptomeria japonica) plantation, Kansai Region, Japan, November 2008.

Cyril Ruoso / Maple (Acer sp) branches in autumn colours overhanging watefall, Mitarai Canyon, Tengawa Valley, Yoshino-Kumano National Park, Kansai, Japan, November.

Cyril Ruoso / Maple (Acer sp) branches in autumn colours overhanging watefall, Mitarai Canyon, Tengawa Valley, Yoshino-Kumano National Park, Kansai, Japan, November.

Cyril Ruoso / Maple (Acer sp) branches in autumn colours overhanging watefall, Mitarai Canyon, Tengawa Valley, Yoshino-Kumano National Park, Kansai, Japan, November.

Kirkendall-Spring / Hosta (Hosta sp) and Japanese maple (Acer palmatum) leaves with rain drops, Kabota Garden, Seattle, USA, May.

Sandra Bartocha / Maple (Acer sp) sapling growing amongst flowering Wood anemones (Anemone nemorosa) in Beech woodland, Neubrandenburg, Germany, April.

Sandra Bartocha / Maple (Acer sp) sapling growing amongst flowering Wood anemones (Anemone nemorosa) in Beech woodland, Neubrandenburg, Germany, April.

Adrian Davies / Fallen Maple leaves (Acer sp.) in autumn. Winkworth Arboretum, Surrey, England, UK, October.

Pascal Tordeux / Maple (Acer sp) under mamatus clouds and the beginnings of a thunderstorm. Picardy, France. June 2000

Wild Wonders of Europe / Bartocha / Maple tree (Acer sp.) Crovul Valley Gorge, Arges County, Leota mountain range, Carpathian Mountains, Romania, July

Wild Wonders of Europe / Bartocha / Maple tree (Acer sp.) Crovul Valley Gorge, Arges County, Leota mountain range, Carpathian Mountains, Romania, July

Wild Wonders of Europe / Bartocha / Maple tree (Acer sp.) Crovul Valley Gorge, Arges County, Leota mountain range, Carpathian Mountains, Romania, July

Ben Lascelles / Autumn / fall colours of maple (Acer sp) trees, Hardwood lookout trail, Algonquin Provincial Park, Ontario, Canada. Oct 2009

Ben Lascelles / Autumn / fall colours of the maple (Acer sp). trees, Hardwood lookout trail, Algonquin Provincial Park, Ontario, Canada. Oct 2009

Ben Lascelles / Autumn / fall colours of maple (Acer sp) trees, Hardwood lookout trail, Algonquin Provincial Park, Ontario, Canada. October 2009

Sandra Bartocha / Maple (Acer sp.) flowers and unfurling leaves, Mecklenburg-Vorpommern, Germany, April

Adrian Davies / Purple Toothwort (Lathraea clandestina) growing on (Acer saccharinum) England, March.

Rob Cousins / Maple (Acer sp) leaves in autumn, Westonbirt Arboretum, Gloucestershire, UK, October

Rod Williams / Cluster fly (Pollenia sp) on Sycamore leaf, South London, UK, October

Nature Production / Maple (Acer sp) fallen leaf on frozen branch, Japan

Ross Hoddinott / RF- Maple (Acer sp.) leaves showing red and gold autumn colours. Westonbirt Arboretum, Gloucestershire, UK. October.