Nice post, It's always fun to see pictures from arboreta that I haven't been to before.
The Aucuba himalayica looks somewhat similar to my A. japonica 'salicifolia'. The growth habit of the salicifolia seems a bit more dense, however.
I like the shiny leaves on the D. macropodium, they seem quite happy. Also, any idea how cold it got there last winter? Apparently it was cold enough to kill the Monkey Puzzle.