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The Arboretum de Calmels is a small arboretum located on the grounds of the 19th-century Château de Calmels in Lacaune, Tarn, Midi-Pyrénées, France. It contains regional trees such as "Aesculus hippocastanum", "Juglans regia", and "Pinus strobus", as well as exotics including "Larix leptolepis" and "Sequoiadendron".