Staff at Matthaei Botanical Gardens & Nichols Arboretum discovered over a dozen double walnuts on an individual black walnut tree at Matthaei. Experts from U-M and Clemson University were consulted but the jury is still out as to the cause of the unusual double fruits.
Palmer cut the conjoined walnut in half with a coping saw to reveal two separate nuts inside. See picture for detail.
|A rare double black walnut from a tree at Matthaei Botanical Gardens. Over a dozen fruits were discovered to be conjoined. Experts from U-M and Clemson were consulted but still don't know the cause.|