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

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.

Lily, Lilium, Aruba California Callas, sp Zantedeschia, close up against green background.

Ginko, Maidenhair tree, Gingko biloba, Single gree leaf among autumnal oak leaves, Wilsonville, Oregon, USA.

Maple, Acer rubrum, Single autumnal coloured leaf.

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

Sumac, Cutleaf Sumac, Rhus glabra 'Laciniata', in autumnal colours, Hoyt Arboretum, Portland, Oregon, USA.

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

Wildflowers and burned manzanita bush three years after wildfire, Mostly Ceonothus, snowbush, and Indian Paintbrush, Freemont National Forest, Oregon, USA.

Oak, Autumnal colours of Aspen and Oak leaves in pond near Alpine, Oregon, USA.

Tiger lily, Columbian lily, Lilium columbianum, Hurricane Ridge, Olympic National Park, Washington, USA.