Complex sentence: In the USA it is represented by a single living specimen at the Arnold Arboretum, (Accession no.761-80) obtained from Simon-Louis Freres, Germany, in 1980.
Split into simpler sentences: In the USA it is represented by a single living specimen at the Arnold Arboretum. Planted in 1980, this tree (Accession no.761-80) was obtained from Simon-Louis Freres, Germany, in 1980.