pile of fresh horse chestnuts (aesculus hippocastanum) among dry leaves. autumn background with ripe brown horse

aesculus hippocastanum horse chestnuts spanish chestnut aescub antiinflammatory autumn background barb beautiful biology botany brown buckeye castanea castor fruit close closeup conker tree environment escin european fall foliage folk medicine forest fruits horsechestnut nature october outdoors pile prickle prickly prong quill ripe round scavenging scenery seed hull september spike spine thorn close-up fresh dry leaves shell top