Tree experts stumped by case of 'elephant trunk'

By Joseph Tunney, CBC

...'Paul Sokoloff, a botanist at Ottawa's Canadian Museum of Nature and a member of the board of directors of the Field Botanists of Ontario, confirmed it's a rare find, and a first for him, too.

...Water stress, hormones or some other disruption of the tree's outer later are all plausible explanations, but further study is required, Sokoloff said. Finding more specimens could provide a clue as to whether the cause is environmental or genetic, he added.

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