Close up of autumnal colours and trunks of aspen trees, Inyo National forest, California, USA.

Close up of autumnal colours and trunks of aspen trees, Inyo National forest, California, USA.

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

Tamarack or larch in autumnal color, North Cascades National Park, Washington, USA.

Hornbeam, Carpinus betulus woodland in winter with many multistemed trunks and branches creating a pattern. Manipulated colours.

Cow parsley, Anthriscus sylvestris, Masses of white flowers amongst woodland, with trunks of trees including Plane tree.

Common oak, Quercus robur, Side view of upper branches of some trees with ivy climbing up the trunks.

Tall, columnar trunks of Redwood, Sequoia sempervirens with rugged, red bark.