fresh horse chestnuts (aesculus hippocastanum). autumn background with ripe brown horse chestnut and prickly shell on

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