A third of Britons cannot identify the nation's most famous types of trees, according to a new study.
Researchers found that when it comes to telling the difference between an English oak or a sycamore, many of us are stumped.
One in 20 people questioned could not name any of Britain's common trees.
Even the horse chestnut, which has produced conkers for generations of schoolboys, is a mystery to nearly seven in ten people, said the study by UK firm Forest Holidays.
It took a mixed sample of 250 adults and showed them pictures of 10 of Britain's most popular types of tree and asked them to name them.
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To be honest i suspect it's a lot more than a third.