A new truffles species unknown to science has been discovered at the Arnold Arboretum. In a newly published study, Rosanne Healy, a 2013 recipient of the Arnold Arboretum Sargent Award, and her colleagues, first discovered the European species Tuber borchii on the roots of a native red oak in the arboretum. Due to that truffle being an economically valuable and edible truffle that is native to Europe, Healy and her colleagues set out to determine the extent of the truffle colonization. "We also wanted to determine whether other non-native Tuber species had been inadvertently introduced into this 140-year-old Arboretum because many trees were imported into the site with intact soil and roots prior to the 1921 USDA ban on these horticultural practices in the USA. While T.