When in doubt if a name is combined or two words, I usually just type in the first part, Acer blood, which in this case popped up two choices, one being what JB was looking for, and the other a similar tree I never knew existed (and so, learned something new today).
I was putting in some conifers and J. maples this morning and figured they were probably all in the database, but had to do some creative searching to find them, sometimes only searching for the cultivar name, or Acer plus just the first few letters of the cultivar - there can be numerous spelling variations of the same name.
