Complex sentence: The Bigleaf Maple or Oregon Maple ("Acer macrophyllum") is a large deciduous tree to 35 m tall and is native to western North America, mostly near the Pacific coast, from southernmost Alaska south to southern California.
Split into simpler sentences: The Bigleaf Maple or Oregon Maple ("Acer macrophyllum") is a large deciduous tree to 35 m tall. It is native to western North America, mostly near the Pacific coast, from southernmost Alaska south to southern California.