Juan Carlos Munoz / English iris (Iris xiphioides), Ordesa y Monte Perdido National Park, Aragon, Spain, July.

Juan Carlos Munoz / English iris (Iris xiphioides) growing in limestone pavement, Ordesa y Monte Perdido National Park, Aragon, Spain, July.

Juan Carlos Munoz / English iris (Iris xiphioides) growing in limestone pavement, Ordesa y Monte Perdido National Park, Aragon, Spain, July.

Mike Read / Spanish iris (Iris latifolia) beside the Lac des Gloriettes with the Breach of Tuquerouye, Pyrenees National Park, France. July.

Mike Read / Spanish iris (Iris latifolia) in early morning mist. Pyrenees National Park, France. July.

Will Watson / English Iris (Iris latiflolia), mountain meadow, Serra dos Ancares, Province of Leon, Spain, June.

Nick Upton / English Iris (Iris latifolia) flowering on Pyreneean mountain meadow. Linza, Huesca, Aragon, Spain. july

Nick Upton / English Iris (Iris latifolia) flowering on Pyreneean mountain meadow, Linza, Huesca, Aragon, Spain. July 2009

Angelo Gandolfi / English Iris (Iris latifolia), Somiedo, Spain.

Inaki Relanzon / English iris (Iris latifolia), Pyrenees, Spain

Dave Watts / Western flag iris (Diplarrena latifolia). Tasmania, Australia. January.

Dave Watts / Western flag iris (Diplarrena latifolia). Tasmania, Australia. January.