Misnomer

One of Thurstan's horse-chestnut's flowering in our garden.

Curious why "Horse Chestnut" I asked the All Seeing, All Truthful Wiki...

The common name "horse-chestnut" is reported as having originated from the erroneous belief that the tree was a kind of chestnut (though in fact only distantly related), together with the observation that eating the fruit cured horses of chest complaints despite this plant being poisonous to horses.

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Karate tonight - teaching under the watchful eye of the Renshi.