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Fruit, nuts, of the Sweet Chestnut (Castanea sativa) in their protective spiky case. The protective cupule is formed from the flower's bracts. Linton, Kent, England, UK. 19 October 2006.


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Fagaceae Beech family Barn Digital BarnDigital botany bract branch cupule defence defend defense food fruit green leaf leaves Michael Grant Images MIchaelGrantImages nature nut nutlet plant prick prickle reproduction science seed sharp spike spine timber tree wood woody
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