The Big-cone Douglas Fir is a magnificent tree species native to Oregon and California. It's known for its towering size, long lifespan, and unique cone features. It is also referred to by various alternate names such as the Pseudotsuga macrocarpa, Douglasia macrocarpa, and the Blue Douglas Fir. The tree's scientific name, Pseudotsuga macrocarpa, also gives it another synonym, the 'False Hemlock'. It is also known as the 'Bigcone Spruce' and 'Penare Blanc' in French. These synonyms give us an insight into the tree's characteristics, helping us understand the different traits and features of the Big-cone Douglas Fir.