two unpeeled horse chestnuts on asphalt

aesculus asphalt autumn botany brown capsule chestnut chestnuts closeup conker crack dark fall globose glossy green ground hippocastanum horse husk macro medicinal nature nut nutlike outdoors pair park pavement peel plant poisonous prickle rind ripe road round season seeds shell shiny sidewalk skin spherical spiky split thorn tree two unpeeled