Photo: Castanea sativa.

Tree. This is the edible one. Compare to Aesculus hippocastanum, horse chestnut, which is not edible. Kew Garden, London, UK. Planted. 1995-08-01.
Castanea sativa P. Mill. Engl.: sweet chestnut, European chestnut, Spanish chestnut. Deu.: Esskastanie, Kastanie, Marone, Edelkastanie. Suom.: jalokastanja, aito kastanja. Sven.: äkta kastanj. Bot. syn.: Castanea castanea (L.) H. Karst., Castanea vesca Gaertn., Castanea vulgaris Lam., Fagus castanea L.
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Photo: Castanea sativa.