Complex sentence: The Colorado spruce, blue spruce, green spruce white spruce, or Colorado blue spruce ("Picea pungens"), is a species of spruce tree native to the Rocky Mountains of the United States.
Split into simpler sentences: The Colorado spruce, blue spruce, green spruce white spruce, or Colorado blue spruce, with the scientific name "Picea pungens", is a species of spruce tree. It is native to the Rocky Mountains of the United States.