Another favourite tree of mine, next to maples and birches, are aspens. You don't see too many around these here local parts (too warm and wet) but it is sure a treat to come across some as we did when we were in Utah and traveled high in elevation between campsites. It was a neat thing to be driving along at a low elevation in desert sand and slickrock and then gradually the trees got bigger and bigger the higher up we went, until at about 9500 feet, we were surrounded by Ponderosa pine and aspens. Our campsite was next to a lovely babbling brook. It was something out of Tolkien.