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

Pascal Tordeux / Lone Maple (Acer) in a field against cumulo-nimbus and mammatus clouds. Picardy, France, May.

Marie Read / Red Maple (Acer rubrum) leaves covered with early snow in autumn. Ithaca, New York, USA, October.

Marie Read / Red Maple (Acer rubrum) leaves covered with early snow in autumn. Ithaca, New York, USA, October.

Stephen Dalton / Maple (Acer sp) leaves in autumn

Colin Varndell / Close up of Field maple buds (Acer campestre) Dorset, England, UK February

Laurie Campbell / Norway Maple (Acer platanoides) fallen leaves in autumn, Queen Elizabeth Forest Park, Stirlingshire, Scotland, October

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

Jack Dykinga / Yucca (Yucca schottii) plants growing amongst Bigtooth maple trees (Acer saccharum grandidentatum) in autumn, Huachuca Mountains, Coronado National Forest, Arizona, USA

Jack Dykinga / Yucca (Yucca schottii) plants growing amongst Bigtooth maple trees (Acer grandidentatum) in autumn, Huachuca Mountains, Coronado National Forest, Arizona, USA

Jack Dykinga / Leaves of Arizona sycamore (Platanus Wrightii) and Bigtooth maple (Acer saccharum grandidentatum) floating on water, South Fork Cave Creek, Coronado National Forest, Chiricahua Wilderness, Chiricahua...