Nick Upton / Hyssop-Leafed Mountain Tea / Ironwort (Sideritis hyssopifolia) flowering on a mountain slope in a limestone rock crevice, Covadonga, Picos de Europa, Asturias, Spain, August.

Nick Upton / Mountain ironwort/ White sage / Mountain tea (Sideritis dasygnaphala / Leucophae dasygnaphala) a Gran canaria endemic, flowering in volcanic uplands, Gran Canaria, May.

Nick Upton / Gran Canaria endemic plants, Mountain ironwort (Sideritis dasygnaphala / Leucophae dasygnaphala) and Aeonium / Tree houseleek (Aeonium simsii) growing among volcanic rocks within. Gran Canaria UNESCO...

Colin Monteath / Tsataan men drinking tea and chating in winter camp, Hunkher Mountains, northern Mongolia

Colin Monteath / Caribou (Rangifer tarandus) watching a Tsataan elder brewing tea over wood fire at camp, Hunkher Mountains, Mongolia

Colin Monteath / Tsataan man making tea in taiga forest while bread cooks beside the open fire during spring Reindeer round up, Mongolia

Colin Monteath / Tsataan man making tea in taiga forest while bread cooks beside the open fire during spring Reindeer round up, Mongolia