Felix Conifer is right, Bob uses "evergreen" whenever he means a pine tree, though there are many evergreen species not remotely related to pines.
Now, there are a few ambiguous trees. I'm specifically thinking of the whimsical spindly trees with leaves or needles that spray up. I tend to think of them as some sort of redwood or cedar, but I don't recall if Bob ever names the one or other variety.
