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blackthorn, pear haw, pear hawthorn, Crataegus calpodendron, Crataegus tomentosa | erect and almost thornless American hawthorn with somewhat pear-shaped berries ❲Crataegus calpodendron, Crataegus tomentosa❳ | |
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sloe, blackthorn, Prunus spinosa | a thorny Eurasian bush with plumlike fruits ❲Prunus spinosa❳ |