Jack Dykinga / Morning light with autumn coloured Cottonwoods (Populus sp) trees lining the river. Valley of the Gods, Colorado Plateau, of the Great Basin Desert, Utah, USA, November 2018.

Jeff Foott / Cottonwood (Populus sp) trees in autumn, Grand Staircase-Escalante National Monument, Utah

Jeff Foott / Fremont Cottonwood (Populus fremontii) trees in autumn, Bentonite Hills, Capitol Reef National Park, Utah

Pascal Tordeux / Avenue of Poplar (Populus sp) trees in fog, Villers Le Sec, Aisne, Picardy, France, December.

Pascal Tordeux,Pascal Tordeux / Two rows of Poplar (Populus sp.) trees reflected in in flood water, during the floods of the River Oise, Picardy, France, January 2008

Pascal Tordeux / A row of Poplar trees (Populus sp) with Mistletoe (Viscum sp) silhouetted in winter at sunset, Picardy, France, January

Tim Fitzharris / Cottonwood (Populus sp) trees in autumn, Teec Nos Pos, Arizona

Nigel Cattlin / Poplar hawk moth (Laothoe populi) resting on Poplar (Populus sp) leaf. Devon, England, UK. May.

Jack Dykinga / San Pedro River lined with Cottonwood (Populus sp) trees, in evening light. San Pedro Riparian National Conservation Area, Arizona, USA. June 2019..

Jack Dykinga / Morning light with autumn coloured Cottonwoods (Populus sp) trees lining the river. Valley of the Gods, Colorado Plateau, of the Great Basin Desert, Utah, USA, November 2018.

Jeff Foott / Fremont Cottonwood (Populus fremontii) trees and potholes in autumn, Grand Staircase-Escalante National Monument, Utah

Jeff Foott / Fremont Cottonwood (Populus fremontii) trees in autumn, Grand Staircase-Escalante National Monument, Utah