closeup view of closeup of horse-chestnut or european horsechestnut or buckeye, known for its toxicity

aesculus hippocastanum europe france aescin autumn botanical botany brown buckeye bulb capsules chestnuts closeup confusion conker tree danger digestive disorders european fall flora fruit glycoside horse horsechestnut husk ingestion irritation maple medicine nature nausea nut pain plant poison poisonous problems raw saponin season seasonal seeds soapberry spiked throat toxic unsafe venous vomiting view horse-chestnut toxicity leads abdominal