Japanese Maple tree in autumnal colours, Portland Japanese Gardens, Oregon, USA.

Japanese Maple in autumnal colours, Portland Japanese Gardens, Portland, Oregon, USA.

Maple, Acer rubrum, Single autumnal coloured leaf.

Japanese Maple tree in autumnal colours, Portland Japanese Gardens, Oregon, USA.

Maple, Vine Maple, acer circinatum, and Blue Elderberry, sambucus caerulea, berries, Alsea River, Oregon, USA.

Big Leaf Maple trees in autumnal colours with sunburst, Monroe, Oregon, USA.

Maple, Japanese maple, Acer palmatum, Bright red autumn leaves wet after rain.

Maple, Japanese maple, Acer palmatum, Bright red autumn leaves wet after rain.

Maple, Japanese maple, Acer palmatum, Leaves showing autumn colours, North Yorkshire, October.

Japanese maple 'Orange Dream', Acer palmatum 'Orange Dream', Golden coloured leaves with distinctive pattern.

Japanese maple 'Orange Dream', Acer palmatum 'Orange Dream', Golden coloured leaves with distinctive pattern.

Acer, Japanese maple, Acer palmatum 'Shindeshojo', Red coloured leaves showing distinctive shape.