Also called conker tree.  Part of 🌰︎ buckeye / horse chestnut  genus Aesculus and soapberry  family Sapindaceae.

Native to the eastern Mediterranean;  but widely planted as a shade tree. Invasive > in USA

Uses by native peoples
(Ethnobotany database)

On a list as having seeds slightly ☠ poisonous ☠ to humans (all parts of the plant).   Other sources say seeds are slightly ☠ toxic ☠ to horses and humans.

Learn more about 🌰︎ horse chestnut Aesculus hippocastanum

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